CDS BIOLOGY PRACTISE SHEET - nationaldefenceinstitute.in

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1. Nucleus is separated from

cytoplasm by

a) nuclear membrane

b) nucleoplasm

c) organs

d) cell membrane

2. The liquid material in the

nucleus is

a) chromosomes

b) bacteria

c) nucleoplasm

d) nucleolus

3. Tissues combine to form

a) nucleus

b) cells

c) organism

d) organs

4. Cells present in living

organism differ in

a) numbers

b) shape

c) size

d) all of these

5. Cells which lack nuclear

membrane are

a) eukaryotic cells

b) prokaryotic cells

c) single cells

d) multicells

6. The control centre of all the

activities of a cell is

a) nucleus

b) nucleoplasm

c) cytoplasm

d) organelles

7. The coloured organelles which

are found in plants only are

a) chlorophyll

b) plastids

c) vacuoles

d) WBC

8. Genes are located in

a) chromosomes

b) plastids

c) cytoplasm

d) lysosome

9. A group of similar cells

combine to form

a) tissue

b) organ

c) organisms

d) organelles

10. The organism containing only

a single cell is called

a) unicellular organism

b) multicellular organism

c) organelle

d) all of these

11. Cell walls is found in

a) plant cells only

b) animal cells only

c) both (a) and (b)

d) none of them

12. The empty blank looking

structures in the cytoplasm is

a) vacuoles

b) plastids

c) plasma membrane

d) nucleus

13. The other name of cell

membrane is

a) plasma membrane

CDS BIOLOGY PRACTISE SHEET

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b) cell wall

c) nuclear membrane

d) none of these

14. The basic structural and

functional unit of all living

organism is

a) cell

b) cell wall

c) cell membrane

d) chloroplasts

15. Chromosomes are found in

a) nucleus

b) nucleolus

c) nucleoplast

d) vacuole

16. __________ and _________

coined the term “Meiosis”.

a) Van Burin and Hertwig

b) Boveri and Stuka

c) Walleye and Hofmeister

d) Farmer and Moore

17. Chromatids coiling in the

meiotic and mitotic division is

_____

a) Plectonemic in both

b) Paranemic in both

c) Paranemic in mitosis and

plectonemic in meiosis

d) Plectonemic in mitosis and

paranemic in meiosis

18. When there is an increase in

the condensation of chromatin

during the process of cell

division –

a) Heterochromatin increases

b) Euchromatin increases

c) Differentiation of euchromatin &

heterochromatin decreases

d) Differentiation of euchromatin &

heterochromatin increases

19. The condensation of

chromosomes is observed in

______

a) Prophase 1

b) Anaphase 1

c) Metaphase 1

d) None of the above

20. Nuclear DNA replicates in the

________ phase.

a) G2 phase

b) M phase

c) S phase


21. _________ is a form of cell

division which results in the

creation of gametes or sex cells.

a) Mitosis

b) Meiosis

c) Miosis


22. ____ is the number of DNA in

the chromosome at the G2 stage

of the cell cycle

a) 1

b) 2

c) 3

d) 0

23. The stage which serves as a

connecting link between meiosis

1 and meiosis 2

a) Interphase 2

b) Interphase 1

c) Interkineses


24. The longest stage in the cell

cycle is

a) Interphase

b) Anaphase

c) Metaphase

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25. The _______ state implies

the exit of cells from the cell

cycle

a) S

b) G1

c) G2

d) G0

26. Synapsis is defined as the

pairing of ________

a) Acentric chromosomes

b) Non-homologous chromosomes

c) Any chromosomes

d) Homologous chromosomes

27. Mitosis can be observed in

_____

a) Polyploid individual

b) Diploid individual

c) Haploid individual

d) Both (1,) (2) and (3)

28. The spindle apparatus is

formed during the ________

phase of mitosis.

a) Telophase

b) Metaphase

c) Prophase

d) Anaphase

29. Cyclin is associated with

___________

a) Leptospirosis

b) Glycolysis

c) Cylosis

d) Mitosis

30. If an individual wants to view

diakinesis, which of these would

be

a) Hair

b) Leaf

c) Onion root

d) Flower bud

31. Chromosome structure can

be observed best during ____

a) Anaphase

b) Metaphase

c) Prophase


32. In Five-Kingdom Division,

Chlorella and Chlamydomonas

Fall Under

a) Algae

b) Plantae

c) Monera

d) Protista

33. Which Group Hold Maximum

Nutritional Diversity?

a) Monera

b) Plantae

c) Fungi

d) Animalia

34. Nuclear Membrane Is Absent

In?

a) Volvox

b) Nostoc

c) Agaricus

d) Penicillium

35. The Basis of Biological

Classification Depends On

a) Structure of cell wall

b) Structure of Nucleus

c) Asexual reproduction

d) Nutrition

36. Name the Classification,

Based on the Genetic and

Evolutionary Relationship

a) Phonetics

b) Biosystematics

c) Numerical taxonomy

d) Cladistics

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37. What is The Purpose of

Taxonomy?

a) Explain the origin of life

b) Identification of unknown species

c) To search the history of evolution

d) Identify medicinal plants.

38. Which Taxonomy Category

Exists?

a) Species

b) Phylum

c) Kingdom

d) d Genus

39. The Purpose of a Botanical

Garden is to

a) Preserves tropical plants

b) Ex-situ conservation of

germplasm

c) To preserve wildlife

d) Giving a place for recreation

40. In Which form Fungi Stores

Food Material?

a) Lipid

b) Starch

c) Oil and glycogen

d) Protein

41. A common Characteristic of

Archaebacteria

a) Structure of cell membrane

b) Structure of cell wall

c) Has fatty acid synthetase

d) Structure of flagellin protein

42. Another Name of

Cyanobacteria

a) Blue-green algae

b) Golden algae

c) Protists

d) Slime moulds

43. Paramecium is

a) Bacterium

b) Protozoan

c) Virus

d) Annelid

44. Name of Agaricus’s Fruiting

Body

a) Fairy rings

b) Cleistothecium

c) Basidiocarp

d) Ascocarp

45. Phycology is the Study of

a) Algae

b) Fungi

c) Lichens

d) Mosses

46. Viral Envelope Consists of

a) Proteins

b) Lipids

c) Carbohydrates

d) All one the above

47. Heterocyst in Nostoc

Participates in

a) Nitrogen-fixation

b) Fragmentation

c) Fruit storage

d) Symbiotic relation

48. Whittaker’s Definition of

Classification Does Not Include

a) Algae

b) Protista

c) Plantae

d) Mychota

49. Classification is Not Based On

a) Thallus organisation

b) Cell structure

c) Gross morphology

d) Phylogenetic relationship

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50. Which is Not A Bacterial

Disease?

a) Cholera

b) Plague

c) Citrus canker

d) Mumps

51. Which of The Following

Features Mycoplasma Does Not

Have?

a) Pleomorphic

b) Lacks cell wall

c) All are correct

d) Cannot live without oxygen

52. Which Is Incorrect for

Protista?

a) Missing membrane-bound

organelles

b) Links with several organisms

c) This kingdom’s boundary is not

clear

d) Some have cilia or flagella

53. Diatoms Do Not Have

a) Indestructible cell walls

b) Cell walls are like a soapbox

c) Two thick overlapping cells

d) Release cell wall deposits

54. Azolla Boosts Soil Fertility of

a) Barley

b) Maize

c) Rice

d) Wheat

55. Fungal Cell Walls Have

a) Hemicelluloses

b) Cellulose

c) Chitin

d) Pectin

56. Genetic Recombination Can

Happen in Prokaryotes During

a) Transformation

b) Transduction

c) Conjugation

d) All of these

57. Spirochaetes Are

a) Bacteria

b) A class of viruses

c) A class of insects

d) Fungi

58. Diatoms Do Not Decay

Quickly Because

a) They are Chitinous

b) It has siliceous walls

c) Diatoms contain saline soil

d) Their body is impervious to water

59. What are Plant

Decomposers?

a) Monera and fungi

b) Plantae and fungi

c) Monera and Animalia

d) Animalia and Protista

60 . Among Mushroom, Smut and

Rust, Two of them are

a) Bear Ascocarp

b) Saprobes

c) Carry Basidiocarp

d) Pathogens

61. what causes Red Tide ?

a) Ceratium

b) Triceratium

c) Gonyalax

d) All the best

62. Which One Is Sexual Spore?

a) Ascospore

b) Zoospore

c) Conidia

d) Sporangiospore

63. Which Is Not A Part of The

Sexual Cycle of Fungi?

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a) Plasmogamy

b) Mitosis

c) Karyogamy

d) Meiosis

64. Which One Does Not Belong

to Deuteromycetis?

a) Colletotrichum

b) Alternaria

c) Ustilago

d) Trichoderma

65. Which Statement is False for

Capsid?

a) It consists of capsomeres

b) This the outermost layer of most

viruses

c) They are arranged in random

geometrical structure

d) It protects genetic material

66. The largest Herbarium Is

Situated At

a) Kew

b) New York

c) Berlin

d) Geneva

67. The waxy substance

associated with the wall of the

cork cell is

a) Lignin

b) Hemicellulose

c) Cutin

d) Suberin

68 . A tissue that does not

contain lignin

a) Sclerenchyma

b) Parenchyma

c) Collenchyma

d) Chlorenchyma

69. Lateral roots originate in

a) Cortex

b) Endodermal cells

c) Pericycle

d) Cork cambium

70. Which gives rise to the cork

tissue?

a) Periblem

b) Phellogen

c) Phelloderm

d) Periderm

71. Which are the external

protective tissues of the plant?

a) Cortex and epidermis

b) Cork and cortex

c) Pericycle and cortex

d) Epidermis and cork

72. Following is the

characteristic of collenchyma

a) Elongated cells with thickened

corners

b) Isodiametric cells with thickened

walls

c) Elongated cells with deposits of

cellulose and pectin

d) Isodiametric cells with deposits of

cellulose and pectin

73. Casparian strips are found in

a) Epidermis

b) Endodermis

c) Exodermis

d) Pericycle

74. The apical meristem of the

root is found in

a) Taproots

b) Radicals

c) Adventitious roots

d) All the roots

75. Bordered pits are found in

a) Vessel wall

b) Sieve cells

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c) Sieve tube

d) Companion cells

76. Where in epiphytes are

velamen cells located?

a) Below the endodermis

b) Below the epidermis

c) Just outside the cortex

d) Just outside the exodermis

77. Intercalary meristem results

in

a) Primary growth

b) Secondary growth

c) Apical growth

d) None

78. The age of the tree can be

determined by

a) Measuring its diameter

b) Counting the number of annual

rings

c) Counting the number of leaves

d) Finding out the number of

branches

79. Which meristem helps in

increasing the girth of the plant?

a) Primary meristem

b) Apical meristem

c) Intercalary meristem

d) Lateral meristem

80. Fibres associated with

phloem

a) Wood fibres

b) Bast fibres

c) Hard fibres

d) Surface fibres

81. In angiosperms, xylem is

made up of

a) Tracheids and fibres

b) Tracheids and vessels

c) Vessels and fibres

d) All of the above

82. Which of the following has a

perforated cell wall?

a) Vessel

b) Fibre

c) Tracheid

d) Sclereid

83. How many radial vascular

bundles are found in dicot roots?

a) Four

b) Six

c) Two

d) One

84. Bicollateral bundles are

found in the stem of

a) Pumpkin

b) Sunflower

c) Dracaena

d) Gram

85. Vascular bundles in dicot

stem are

a) Closed, conjoint, endarch

b) Open, conjoint, endarch

c) Closed, conjoint, exarch

d) Open, conjoint, exarch

86. Wound healing in plants is

initiated by

a) Apical meristem

b) Lateral meristem

c) Secondary meristem

d) Intercalary meristem

87. In connective tissue sheaths,

this is the correct sequence

stretching from the outermost to

the innermost layer

a) epineurium, endoneurium,

perineurium

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b) perineurium, epineurium,

endoneurium

c) perineurium, endoneurium,

epineurium

d) epineurium, perineurium,

endoneurium

88. This is the difference

between a nerve and a neuron

a) consists of different number of

cells

b) one has motor and other has

sensory function

c) nerves are made of grey matter

while neurons of white matter

d) nerves are present in central

nervous system only

89. The only connective tissue

without fibroblasts is

a) areolar connective tissue

b) bone

c) cartilage

d) blood

90. In these tissue cells, Lacunae

are enclosed

a) Cartilage

b) Bone tissue

c) both (a) and (b)

d) muscular tissue

91. Mast cells are linked to

a) neural tissue

b) areolar connective tissue

c) endocrine glands

d) exocrine glands

92. These are brain macrophages

a) astrocytes

b) microglial cells

c) ependymal cells

d) oligodendrocytes

93. This is not a function of

neuroglia

a) phagocytosis

b) isolation of neurons

c) secretion of cerebrospinal fluid

d) information processing

94. This cell is not a type of

neuroglia found in CNS

a) microglia

b) astrocytes

c) ependymal cells

d) Schwann cells

95. Categorization of epithelial

tissue is based on this

a) function

b) type of matrix

c) structural modification

d) non voluntary or voluntary action

96. This is correct about

epithelial tissue

a) lack of nerve supply

b) lack of blood supply

c) lack of free surface

d) lack of intercellular matrix

97. Which of the following is a

nutrient?

a) Protein

b) Fat

c) Vitamin

d) All of these

98.Human beings can be

categorised as

a) heterotrophs

b) autotrophs

c) parasites

d) saprotrophs

99. The food making process in

plants is called as

a) glycolysis

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b) photosynthesis

c) photolysis

d) chemosynthesis

100. Which part of the plant is

called its food factory ?

a) Fruits

b) Seeds

c) Leaves

d) Flowers

101. Tiny pores present on the

surface of leaves through which

gaseous exchange occurs are

called

a) stomata

b) guard cells

c) food holes

d) gas holes

102. What is the ultimate source

of energy for all living

organisms?

a) Water energy

b) Wind energy

c) Solar energy

d) Chemical energy

103. Green pigment present in

the leaves is called

a) haemoglobin

b) globulin

c) albumin

d) chlorophyll

104. During photosynthesis

plants

a) take oxygen and release carbon

dioxide

b) take carbon dioxide and release

oxygen

c) take carbon dioxide but do not

release oxygen

d) take oxygen but do not release

carbon dioxide

105. During photosynthesis

a) solar energy is converted into

chemical energy

b) solar energy is converted into

mechanical energy

c) chemical energy is converted into

mechanical energy

d) bioenergy is converted into

chemical energy

106. The raw materials for

photosynthesis are

a) CO2

b) CO2, O2, H2

c) N2 water

d) O2 water

107. The end products of

photosynthesis are

a) carbohydrates, oxygen

b) carbohydrates, hydrogen

c) carbohydrates, water vapours

d) carbohydrates, oxygen and water

vapours

108. Which one of the following

is a parasite?

a) Lichen

b) Cuscuta

c) Pitcher plant

d) Rhizobium

109. Which of the following class

of organisms belongs to

saprotrophs?

a) Fungi

b) Algae

c) Lichens

d) Bryophytes

110. Which one of the following

is a pair of symbiotic organisms?

a) Lichens

b) Rhizobium and a legume

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c) None of these

d) Both (a) and (b)

111. Which of the following is an

insectivorous plant?

a) Pitcher plant

b) Indian telegraph plant

c) 4 ‘O’clock plant

d) Cuscuta

112. Alpha-ketoglutarate

dehydrogenase results in

a) Oxidation and Decarboxylation

b) Reduction

c) Oxidation


113. _________ is a product of

aerobic respiration

a) Malic acid

b) Pyruvate

c) Ethylene

d) Lactose

114. Energy gained during

aerobic respiration is _______

times more than anaerobic

respiration.

a) 8

b) 12

c) 19

d) 32

115. Glycolysis is also known as

________

a) EMP pathway

b) TCA pathway

c) carbon sequestration


116. On oxidation of 1 molecule

of glucose, ______ ATP is

produced through aerobic

respiration

a) 10

b) 25

c) 30

d) 38

117. Protons accumulate on the

__________ in mitochondria.

a) Inner membrane

b) Intermembrane space

c) Outer membrane


118. Oxidative phosphorylation

usually refers to________

a) Anaerobic production of ATP

b) Citric acid cycle production of ATP

c) Alcoholic fermentation


119. The process of cell

respiration is carried out by

_______

a) Mitochondria

b) Chloroplast

c) Nucleus


120. An important product of the

Krebs cycle is

a) Water

b) Methane

c) ATP


121. Acetyl CoA forms a 6-C

compound after combining with

a) Oxygen

b) Pyruvic acid

c) Citric acid

d) Oxaloacetic acid

122. Name the process through

which much needed oxygen is

supplied to all the cells of the

plants?

a) Diffusion

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b) Endosmosis

c) Exosmosis

d) Photosynthesis

123. Due to Water logging:

a) An air is expelled from in-

between the particles of soil.

b) Oxygen becomes unavailable to

the roots of the plants.

c) Plants respire anaerobically which

produces alcohol and kill them.

d) All the above are correct.

124. Respiration in Plants takes

place through:

a) Stomata

b) Lenticels

c) Both A and B

d) Only A

125. Consider the following

statements:

a) Respiration takes place both day

and night.

b) Photosynthesis occurs during day

time only.

c) Both A and B are correct.

d) Neither A nor B are correct.

126. Some plants store waste in

their fruits in the form of solid

bodies called:

a) Raphides

b) Lenticels

c) Stomata

d) Resins

127. Various methods used by

plants to get rid of their waste

products are:

I. Gaseous waste through

stomata and lenticels.

II. Stored solid and liquid waste

by shedding leaves, peeling of

bark and falling of fruits.

III. By secreting waste in the

form of gum and resins.

Which of the following

statements is/are correct?

a) I and II are correct.

b) II and III are correct.

c) I and III are correct.

d) I, II and III are correct.

128. Name the waste products

secreted by Plants?

a) Carbon Dioxide

b) Oxygen

c) Water Vapour

d) All are correct.

129. Which of the following

statements is/are correct?

I. The net gaseous exchange in

leaves at night is, oxygen

diffuses in and carbon dioxide

diffuses out.

II. Net gaseous exchange during

day time is, oxygen diffuses out

and carbon dioxide diffuses in.

Select the correct answer from

the codes given below:

a) Only I is correct.

b) Only II is correct

c) Both I and II are correct.

d) Neither I nor II is correct.

130. Name an extension of the

epidermal cells of a root which is

in direct contact with the soil?

a) Root Hairs

b) Internodes

c) Bundle Scars

d) Pith

131. The rate of transpiration

will _________ if the

atmospheric pressure is low

a) Increase

b) Decrease

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c) Stay unchanged

d) Can’t be determined

132. The main function of guard

cells is to help with

____________

a) Transpiration

b) Guttation

c) Transcription


133. Transpiration is regulated

by the movements of

__________

a) Parenchyma cells

b) Guard cells

c) Epithelial cells


134. The steroid hormones easily

pass through the plasma

membrane through simple

diffusion because they are _____

a) Gaseous

b) Carbon-based

c) Water Soluble

d) Lipid Soluble

135. Living cells placed in an

isotonic solution tend to retain

their shape and size. This is

based on the principle of

a) Diffusion

b) Transpiration

c) Osmosis


136. Girdling around the trunk of

a tree can cause it to ________

if it cannot regrow to bridge the

wound

a) Stop absorbing water

b) Stop growing

c) Die


137. Transport of food materials

in higher plants occurs through

a) Flowers

b) Companion cells

c) Tracheids

d) Sieve elements

138. Nearly 90% of the flowering

plants have __________

a) Spores

b) Mycorrhizae

c) Naked seeds


139. The movement of materials

from the leaves to other tissues

of the plant is called _________

a) Tropic movement

b) Guttation

c) Transpiration

d) Translocation

140. The exudation of xylem sap

drops on the edges of leaves is

called

a) Transpiration

b) Guttation

c) Condensation


141- In which group of the

organisms the food material is

broken down outside the body ?

A) Mushroom, green plants, amoeba

B) Yeast, mushroom, bread mould

C) Paramecium, amoeba, cuscuta

D) Cuscuta, lice, tapeworm

142- Select the correct

statement -

A) Hetrotrophs make their food

B) Heterotrophs utilize solar energy

to make food

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C) Heterotrophs do not make their

own food

D) Heterotrophs are capable of

converting carbon dioxide and water

into carbohydrates

143- Which of the following

statements about autotrophs is

incorrect ?

A) They synthesize carbohydrates by

using carbon dioxide , water in

presence of sunlight and chlorophyll

B) They store carbohydrates in form

of starch

C) They convert carbon dioxide and

water into carbohydrates in the

absence of sunlight

D) They form the first trophic level in

food chain

144- Which of these reactions

occur in photosynthesis?

A) Carbon dioxide is reduced and

water is oxidised

B) water is reduced and carbon

dioxide is oxidised

C) carbon dioxide and water are

oxidised

D) carbon dioxide and water are

reduced

145- A few drops of iodine

solution were added to rice

water. The solution turned blue

black in colour. This indicates

rice water has -

A) complex proteins

B) simple proteins

C) starch

D) Fats

146- Which is the correct

sequence -

A) mouth → stomach → small

intestine → oesophagus → large

intestine

B) mouth → oesophagus → stomach

→ large intestine → small intestine

C) mouth → stomach → oesophagus

→ small intestine → large intestine

D) mouth → oesophagus → stomach

→ small intestine → large intestine

147- If salivary amylase is

lacking in saliva, which of the

event in mouth will be affected-

A) Proteins breaking down into

amino acids

B) starch breaking down into sugars

C) Fats breaking down into fatty

acids and glycerol

D) Absorption of vitamins

148- The inner lining of the

stomach is protected by one of

the following from hydrochloric

acid. Choose the correct one -

A) Mucus

B) Salivary amylase

C) Pepsin

D) Bile

149- Which part of alimentary

canal receives bile from liver -

A) stomach

B) small intestine

C) large intestine

D) oesophagus

150- In which part of alimentary

canal food is finally digested ?

A) large intestine

b) Stomach

C) Mouth cavity

D) small intestine

151- Choose the function of

pancreatic juice from following :

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A) Trypsin digests proteins and

lipase digests carbohydrates

B) Trypsin digests emulsified fats

and lipase digests proteins

C) Trypsin and lipase digest fats

D) Trypsin digests proteins and

lipase digests emulsified fats

152- The correct sequence of

anaerobic respiration -

A) Glucose → pyruvate → lactic acid

B) glucose → pyruvate →

carbondioxide + ethanol

C) glucose → pyruvate → ADP→

lactic acid

D) glucose -→ pyruvate →

carbondioxide + ethanol + energy

153- The pancreatic juice doesn't

contain following enzymes-

A) Trypsin

B) Amylase

C) Lipase

D) Ptyalin

154- The pancreas pour their

secretion into ___.

A) Small intestine

B) large intestine

C) stomach

D) Duodenum

155- The kidneys in human

beings are part of ______.

A) Nutrition

B) Respiration

C) Excretion

D) Circulation

156- The opening and closing of

stomatal pore depends upon ___.

A) Oxygen

B) water in guard cells

C) concentration of carbon dioxide in

stomata

D) temperature

157- In the human digestion

system the enzymes pepsin and

trypsin are secreted by ?

A) Pancreas and liver

B) pancreas and gall bladder

C) stomach and pancreas

D) stomach and salivary glands

158- Which of the statements is

correct regarding bile?

A) secreted by duct and stored in

liver

B) secreted by liver and stored in

bile duct

C) secreted by liver and stored in

gall bladder

D) secreted by gall bladder and

stored in liver


components of food is digested

by s. amylase?

A) proteins

B) fats

C) Minerals

D) carbohydrates

160- Where are proteins first

digested?

A) small intestine

B) stomach

C) large intestine

D) mouth

161- Which is the first enzyme

that mixes with food?

A) s.amylase

B) trypsin

C) erepsin

D) gastric juice

162- The cellular energy

reserves in autotrophs are____.

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A) glycogen

B) starch

C) protein

D) fatty acids

163- The autotrophs require

____.

A) CO2 and water

B) chlorophyll

C) sunlight

D) All

164- The breakdown of pyruvate

into carbon dioxide, energy and

water takes place in _____.

A) mitochondria

B) cytoplasm

C) Endoplasmic reticulum

D) ribosomes

165- When air is blown through

lime water it turns milky because

of ______.

A) water

B) carbon dioxide

C) limestone

D) calcium oxide

166- Write the correct sequence

of air passage involved in

inhalation?

A) larynx→ Nostrils → Pharynx →

lungs

B) nostrils→ Pharynx→ larynx→

Trachea → alveoli

C) nasal passage → larynx →

Trachea → Pharynx→ Alveoli

D) None

167- During respiration

exchange of gases takes place in

_____.

A) Trachea and larynx

B) alveoli of lungs

C) Alveoli and throat

D) Throat and larynx

168- What prevents back flow of

blood during contraction?

A) Valves in heart

B) Thick muscular walls of ventricles

C) Thin walls of atria

D) All

169- The correct path of urine is

__.

A) Kidney→ ureter → urthra→

urinary bladder

B) Kidney → urinary bladder →

urethra → ureter

C) kidney→ ureter → urinary

bladder→ urethra

D) urinary bladder → kidney →

ureter →urethra

170- During deficiency of oxygen

in tissues of humans, pyruvic

acid is converted into lactic acid

in____.

A) Cytoplasm

B) chloroplast

C) mitochondria

D) golgi body

171. Xylem helps in ___.

A) transportation of water

B) translocation of food

C) both a and b

D) transportation of water and

minerals

172- What is the approximate

length of an alimentary canal?

A) 3m

B) 4m

C) 5m

D) 4.5-5 m

173- Which organelle is called

power house of cell?

16

A) Mitochondria

B) golgi body

C) ribosomes

D) none

174- Which respiration is much

efficient?

A) aerobic

B) anaerobic

C) both are equal

D) none

175- Write full form of ATP.

A) adenosine diphosphate

B) adenosine phosphate

C) adenosine triphosphate

D) none


statement(s) is (are) true about

respiration?

A) During inhalation, ribs move

inward and diaphragm is raised

B) In the alveoli, exchange of gases

takes place i.e., oxygen from

alveolar air diffuses

C) into blood and carbon dioxide

from blood into alveolar air sacs

D) Haemoglobin has greater affinity

for carbon dioxide than oxygen

Alveoli does not help in increasing

surface area for exchange of gases

177- During respiration

exchange of gases takes place

in___.

A) Trachea and larynx

B) Alveoli of lungs

C) Alveoli and throat

D) Throat and larynx


statement (s) is (are) true about

heart?

A) Left atrium receives oxygenated

blood from different parts of body

while right atrium

B) receives deoxygenated blood from

lungs

C) Left ventricle pumps oxygenated

blood to different body parts while

right ventricle pumps deoxygenated

blood to lungs

D) Left atrium transfers oxygenated

blood to the right ventricle which

sends it to different body parts Right

atrium receives oxygenated blood

from different parts of the body

while left ventricle pumps

oxygenated blood to different parts

of the body.

179- Single circulation i.e., blood

flows through the heart only

once during one cycle of passage

through the body, is exhibited

by____.

A) Labeo, Chameleon, Salamander

B) Hippocampus, Exocoetus, Anabas

C) Hyla, Rana, Draco

D) Whale, Dolphin, Turtle

180- Choose the correct

statement that describes

arteries:

A) They have thick elastic walls,

blood flows under high pressure;

collect blood from different organs

and bring it back to the heart

B) They have thin walls with valves

inside, blood flows under low

pressure and carry blood away from

the heart to various organs of the

body

C) They have thick elastic walls,

blood flows under low pressure;

carry blood from the heart to various

organs of the body

17

D) They have thick elastic walls

without valves inside. The Blood

flows under high pressure and carry

blood away from the heart to

different parts of the body

181- The filtration units of the

kidney are called ___.

A) urethra

B) ureter

C) Neuron

D) nephron

182- Oxygen released during

photosynthesis comes

from_____.

A) water

B) Chlorophyll

C) carbon dioxide

D) glucose

183- The blood leaving the

tissues becomes rich in _____.

A) Haemoglobin

B) carbon dioxide

C) water

D) oxygen

184- Which of the following is

incorrect statement:

A) organism grow with time

B) Organisms must repair and

maintain their structure

C) Movement of molecules does not

take place among cells

D) Energy is essential for life

processes

185- The internal (cellular)

energy reservoir in autotrophs

is:

A) glycogen

B) protein

C) starch

D) fatty acids

186- Choose the event that does

not occur in photosynthesis?

A) Absorption of light energy by

chlorophyll

B) Reduction of carbon dioxide to

carbohydrates

C) Oxidation of carbon to carbon

dioxide

D) Conversion of light energy to

chemical energy

187- Choose the form in which

most of the plants absorb

nitrogen from the atmosphere ?

A) proteins

B) nitrates and nitrites

C) atmospheric nitrogen

D) amino acids

188- Which process converts

light energy to chemical energy ?

A) Respiration

B) photosynthesis

C) transpiration

D) transportation of water and

minerals

189- Which of these is the

simplest form of food ?

A) rice

B) wheat

C) Butter

D) Glucose

190- Which out of them is raw

material for photosynthesis ?

A) carbon dioxide

B) water

C) oxygen

D) all

18

191- In a synapse chemical

signal is transmitted from

______.

A) from dendrite of one neuron to

axonal end of other neuron

B) axon to cell body of same neuron

C) cell body to axonal end of same

neuron

D) axonal end of one neuron to

dendrite of another neuron

192- In a neuron, conversion of

electric signal to chemical

reaction occurs at ______.

A) cell body

B) dendritic end

C) axonal terminals

D) axon

193- Impulse flows from ___.

A) dendrite to axon in same neuron

B) axon to dendrite

C) nodes of ranvier to axon

D) none

194- Which statement is wrong:

A) sudden action in response to

something in environment is called

reflex action

B) The path through which signals

are transmitted from receptor to

muscle is called reflex arc

C) Motor neurons carry signal from

spinal cord to effector organs

D) Sensory neurons carry impulse

from effector to receptors

195- The growth of tendrils in

pea plant is due to ____.

A) effect of gravity

B) effect of chemicals

C) rapid cell divisions in tendriller

cells that are away from support

D) rapid cell division in tendriller

cells in contact with the support

196- The shape of guard cells

changes due to change in ___.

A) Protein composition of cells

B) temperature of cells

C) amount of water in cells

D) position of nucleus in cells

197- The substance that triggers

the fall of mature leaves and

fruits from plants is ____.

A) Auxin

B) Gibberellin

C) Abscisic acid

D) Cytokinin


plant hormone ?

A) insulin

B) thyroxine

C) oestrogen

D) cytokinin

199- The movement of root away

from light is:

A) Positive phototropism

B) negative phototropism

C) negative hydrotropism

D) positive hydrotropism

200- Cretinism results due to :

A) Excess secretion of growth

hormone

B) under secretion of thyroxin

C) excess secretion of adrenaline

D) under secretion of growth

hormone

201- The gap between two

neurons is :

A) dendrite

B) synapse

C) axon

D) impulse

19

202- The brain is responsible for

-----------------.

A) Balancing of body

B) Thinking

C) Regulating heart beat

D) All

203- Which is not true about

brain:

A) there are lobes in fore brain

B) Centres of hearing, smell,

memory are located in fore brain

C) Involuntary actions are controlled

by medulla in hind brain

D) Cerebellum does not control

postures

204- Involuntary actions in the

body are controlled by ___.

A) Medulla in fore brain

B) medulla in mid brain

C) medulla in hind brain

D medulla in spinal cord

205- Which of the following pairs

of brain part and its function are

not correctly matched?

A) Pons -consciousness

B) cerebrum-memory and

intelligence

C) cerebellum -balancing and

posture

D) medulla -involuntary actions

206- In humans the life process

is regulated and controlled by

_______.

A) Reproductive and endocrine

systems

B) Respiratory and Nervous systems

C) endocrine and digestive systems

D) nervous and endocrine system

207- Choose incorrect statement

about insulin

A) It is produced by pancreas

B) it regulates the growth and

development of body

C) it regulates blood sugar level

D) deficiency causes diabetes

208- Select the mismatched pairs

:

A) Adrenaline-pituitary gland

B) Testosterone -testes

C) Estrogen -ovary

D) Thyroxine -thyroid gland

209- Rhythm of sleep in our body

is controlled by __.

A) Thymus gland

B) Pineal gland

C) ACTH

D) ADH


endocrine glands is unpaired?

A) Adrenal

B) Pituitary

C) Testes

D) Ovary

211- When a person is suffering

from cold, he can not ________.

A) Differentiate the taste of an apple

from that of ice cream

B) Differentiate the smell of a

perfume from that of agarbatti

C) Differentiate red light from green

light

D) Differentiate a hot object from a

cold object

212- Dramatic changes in body

features are associated with

puberty that are mainly because

of the secretion of _____.

A) estrogen from testes and

testosterone from ovary

20

B) estrogen from adrenal gland and

testosterone from pituitary

C) estrogen from ovary and

testosterone from testes

D) estrogen from pituitary and

testosterone from thyroid


statements is correct about

receptors?

A) Gustatory receptors detect taste

while olfactory receptors detect smell

B) Both gustatory and olfactory

receptors detect smell

C) Auditory receptors detect smell

and olfactory receptors detect taste

D) Olfactory receptors detect taste

and gustatory receptors smell

214- In a neuron, conversion of

electrical signal to a chemical

signal occurs in:

A) cell body

B) axonal end

C) axon

D) dendrite

215- The main function of

abscisic acid in plants is to

_____.

A) increase length of plant

B) promotes growth of plant

C) inhibits growth of plant

D) promotes growth of stem

216- The growth of pollen tubes

towards ovules is due toV____.

A) hydrotropism

B) phototropism

C) chemotropism

D) geotropism

217- The substance that triggers

the fall of mature leaves and

fruits from plants is ____.

A) Auxin

B) gibberellin

C) cytokinin

D) Abscisic acid


not an involuntary action?

A) salivation

B) chewing

C) heart beat

D) vomiting

219- Which statement is not true

about thyroxin?

A) Iron is essential for the synthesis

of thyroxin

B) It regulates carbohydrates,

protein and fat metabolism in the

body

C) Thyroid gland requires iodine to

synthesise thyroxin

D) Thyroxin is also called thyroid

hormone

220- Dwarfism results due to

_____.

A) Excess secretion of thyroxin

B) Less secretion of growth hormone

C) Less secretion of adrenaline

D) Excess secretion of growth

hormone

221- A doctor advised a person

to take an injection of insulin

because-------.

A) His blood pressure was low

B) His heart was beating slowly

C) He was suffering from goitre

D) His sugar level in blood was high

222.- The hormone which

increases the fertility in males is

called ______.

A) estrogen

B) Testosterone

21

C) growth hormone

D) Bile juice

223- The nervous system is

divided into the ____and the ___

;the former consists of ____ and

the latter consists of _____.

A) CNS, PNS, the brain and spinal

cord; nerves around the body

B) CNS, PNS, the nerves around the

body; the ventricles

C) ANS, PNS, the nerves around the

body; the ventricles

D) ANS, CNS, the nerves around the

body; the brain and spinal cord

224- The brain's supporting cells

are called _____.

A) Neurons

B) Mitochondria

C) Nuclei

D) Glial cells

225- Which is not a part of

neuron ?

A) synaptic cleft

B) lobe

C) dendrite

D) nucleus

226- The point at which the

terminal button and another

neuron communicate is called

____;communication here is

made possible by the release of

____.

A) Axon hillock,hormones

B) Presynaptic membrane

,neurotransmitter

C) synapse ,neurotransmitter

D) synapse , hormones

227- ____ covers most of the

axon, it is important because it

___

A) Synovial fluid, facilitates electrical

conduction of nerve cells

B) mylein, facilitates the release of

neurotransmitter

C) CSF, increases conduction of

impulse

D) membrane potential, increases

conduction of impulse

228- The spaces between the

covered part of neurons :

A) Nodes of Ranvier

B) vessicles

C) ventricles

D) synaptic cleft

229- Neurons communicate by

sending electrical impulses

called _____.

A) membrane potentials

B) action potentials

C) neurotransmitters

D) neuromodulators

230- Adrenaline, noradrenaline,

serotonin are called ?

A) Amines

B) neurotransmitters

C) nero actors

D) none

231- What is the role of schwann

cells in neuron ?

A) Thermal insulation of neural

axons

B) limit the speed of action potential

C) Enhance the speed of impulse

D) All

232- The skeletal muscles are

controlled by which nervous

system ?

A) somatic N.S

B) Autonomic N.S

C) glial cells

22

D) all

233- _____ consists of brain and

spine.

A) CNS

B) PNS

C) ANS

D) AAS

234- Nerves throughout the body

other than Brain and spinal cord

form ___.

A) CNS

B) PNS

C) ANS

D) AAS

235- Groups of neurons that

make hundreds of synaptic

connections with each other

and work together are ______.

A) ganglia

B) neuronal pool

C) Autonomic system

D) somatic system

236- ____ conducts impulse

from peripheral body parts to

brain .

A) sensory nerve

B) motor nerve

C) interneurons

D) microglia

237- ____ are multipolar and

conduct impulse out from spinal

cord .

A) neuroglia

B) neurolemma

C) schwann cells

D) motor neuron

238 - _____ receives the

sensory impulses and conveys to

proper part of brain for

further processes.

A) Hypothalamus

B) cerebrum

C) cerebellum

D) medulla

239 - Damage of cerebellum will

most affect the career of :

A) architect

B) teacher

C) librarian

D) athlete

240- Without ___ the two sides

of brain won't work ?

A) frontal lobe

B) cerebral cortex

C) thalamus

D) corpus callosum

241- In a list of organisms given

below which is reproduced by

asexual method ?

A) Banana

B) Yeast

C) Dog

D) lion

242- Offsprings formed by

asexual method of reproduction

have greater similarity among

themselves because_______.

A) Asexual reproduction involves two

parent

b) Asexual reproduction does not

involve gametes

C) Asexual reproduction occurs

before sexual reproduction

D) Asexual reproduction occurs

before sexual reproduction

243- The correct sequence of

reproductive stages seen in

flowering plants is _______

A) Gamete, zygote, embryo, seedling

23

B) zygote, gamete, embryo, seedling

C) seedling, embryo, zygote,

gametes

D) gamete, embryo, zygote ,

seedling

244- The number of

chromosomes present in parents

and offspring of a particular

species remains constant due to

________.

A) doubling of chromosomes during

zygote formation

B) Halving of chromosomes during

gamete formation

C) Doubling of chromosomes after

gamete formation

D) Halving of chromosomes after

gamete formation

245- In rhizopus tubular

structure bearing sporangia at

their tips are called __________.

A) filaments

B) Rhizoids

C) roots

D) Hyphae

246 Which among the following

is not the function of testis at

puberty ?

A) Formation of sperms

B) Releasing testosterone

C) ovulation

D) release of seminal fluid

247- Length of the pollen grain

depends upon the distance

between ________.

A) pollen grain and upper surface of

stigma

B) pollen grain on upper surface of

stigma and ovule

C) pollen grain in anther and upper

surface of stigma

D) upper surface of stigma and lower

part of style

248- The ability of cell to divide

into several cells during

reproduction in plasmodium is

called __________.

A) budding

B) reproductive division

C) Multiple fission

D) BInary fission

249- Asexual reproduction takes

place through budding in

_______.

A) Amoeba

B) yeast

C) plasmodium

D) leishmania

250- The anther contains

________.

A) sepals

B) ovules

C) carpel

D) pollens

251- In human females, an

event that reflects onset of

reproductive phase is :

A) Growth of body

B) change in voice

C) changes in hair pattern

D) menstruation

252- Which among the following

is not sexually transmitted?

A) AIDS

B) hepatitis

C) Syphilis

D) Gonorrhoea


not the part of female

reproductive system?

24

A) ovary

B) fallopian tube

C) uterus

D) vas deferens

254- During adolescence, several

changes occur in human body.

Mark one change that is

associated with sexual maturity

in boys?

A) loss of milk teeth

B) increase in height

C) weight gain

D) cracking of voice

255- The offsprings formed by

sexual reproduction exhibit more

variations because _________.

A) sexual reproduction is a lengthy

process

B) genetic material comes from two

parents of same species

C) genetic material comes from two

parents of different species

D) genetic material comes from

many parents

256- The reproductive part of

flower is _______.

A) sepals

B) petals

C) anther

D) flower

257- The seeds with two

cotyledons are:

A) fruit

B) dicot

C) monocot

D) flower

258- The triploid nucleus formed

is called ______.

A) fruit

B) seed

C) zygote

D) endosperm

259- Syngamy is :

A) fusion of male gamete and female

gamete in humans

B) fusion of male gamete and female

gamete in non flowering plants

C) fusion of egg cell and male

gamete in non flowering plants

d) fusion of egg cell and male

gamete in flowering plants

260- The fate of placenta is to :

A) provide nutrition to embryo

B) provide support to embryo

C) provide minerals to zygote

D) none

261- Vegetative propagation

refers to formation of new plants

from----------.

A) stem, roots, flowers

B) stem, roots, leaves

C) stem, flowers, fruit

d) stem, leaves, flowers

262- Factors responsible for the

rapid spread of bread mould on

slices of bread are _______.

A) lesser number of spores

B) availability of moisture and

nutrients

C) presence of tubular branched

hyphae

D) formation of round shaped

sporangia


statements are true for flowers?

A) flowers are always bisexual

B) They are sexual reproductive

organ

C) They are produced in all group of

plants

25

D) After fertilization they give rise to

fruit


statements are false for

unisexual flowers?

A) They always possess stamen and

pistil

B) they possess either stamen or

pistil

C) they show cross pollination

D) unisexual flowers posessing only

stamens can not produce fruits


statements are false for sexual

reproduction in flowering plants?

A) it requires two types of gametes

B) fertilization is compulsory

C) it always results in formation of

zygote

D) offsprings are clones

266- Reproduction is essential

for living organisms in order to

_______.

A) keeping the organism alive

B) fulfil their energy requirement

C) maintain growth

D) continue species from generation

to generation

267- In human males, the testes

lie in the scrotum, because it

helps in _________.

A) process of mating

B) formation of sperm

C) easy transfer of gametes

D) all

268- The two oviducts in human

female unite in a bag called

________.

A) vagina

B) uterus

C) cervix

D) fallopian tube

269 - Which out of them is STD?

A) kala azar

B) jaundice

C) cholera

D) syphilis

270- When an animal is cut into

pieces and each part gives rise to

new organism the process is

called _____________.

A) Budding

B) fragmentation

C) spore formation

D) Regeneration


contraceptive ?

A) condom

B) copper T

C) Diaphragm

D) all

272- Which is the portion on

which grafting is done and it

provides roots?

A) stock

B) scion

C) both a and b

D) none

273- Where does fertilization

occur in human females ?

A) cervix

B) vagina

C) uterus

D) oviduct

274. - Growing foetus derives

nutrition from mother through

_______.

A) endosperm

B) placenta

26

C) fallopian tube

D) cervix

275 - What is the puberty age in

females?

A) 8-10

B) 10-12

C) 12-14

D) 14-16

276 - IUCD is for :

A) vegetative propagation

B) prevent miscarriage

C) contraception

D) increasing fertility chance

277- Bryophyllum reproduces

through _______.

A) Buds

B) leaf

C) root

D) stem

278 - Rose is propogated

through ______.

A) leaf

B) stem

C) root

D) none

279- The animals that give birth

to young ones are called as :

A) Oviparous

B) Viviparous

C) both a and b

D) None

280- Tadpole is the developing

stage of which of these?

A) Dogs

B) Cats

C) Frogs

D) humans

281- The cell formed after

fertilization is called :

A) Foetus

B) zygote

C) embryo

D) none

282- Eggs are formed in :

A) Testes

B) ovaries

C) penis

D) none

283 - How many modes of

reproduction take place in

animals?

A) one type

B) Two types

C) three types

D) four types

284 - A sperm consists of how

many parts ?

A) 1

B) 2

C) 3

D) 4

285 - Foetus is a :

A) well developed embryo

B) developing embryo

C) A zygote

D) male gamete

286 - oviparous are the ones

who _____

A) produce eggs

B) produce young ones

C) both a and b

D) none

287 - Cloning is a mode of :

A) sexual reproduction

B) asexual reproduction

C) both a and b

27

D) none

288 - The lytic enzyme of sperm

is :

A) ligase

B) Acrosome

C) Androgen

D) pepsin

289 - The number of

chromosomes in human sex cell

is :

A) 23

B) 23 pairs

C) 46

D) 46 pairs

290- The number of autosomes

in humans is :

A) 46

B) 44

C) 23

D) 22

291- A Mendialian experiment

consisted of breeding of tall pea

plants bearing violet flowers

with short pea plants bearing

white flowers. The progeny all

bore violet flowers but almost

half of it were short. This

suggests that the genetic make

up of tall parent can be depicted

as :

A)TTWW

B) TTww

C) TtWW

D) TtWw

292- Two pink coloured flowers

on crossing resulted in 1 and 2

pink and 1 white flower progeny.

The nature of cross will be :

A) Double fertilization

B) Self pollination

C) Cross pollination

D) No fertilization

293- The two versions of trait

which are brought in by female

and male gametes are situated at

:

a) Copies of same chromosomes

b) Two different chromosomes

c) Sex chromosomes

d) Any chromosomes

294- From below, select the

character that is acquired not

inherited ?

a) Colour of eye

b) Colour of skin

c) Size of body

d) Nature of hair

295- A cross between tall plant

(TT) and short pea plant (tt) is

inherited in progeny that were

all tall plants because :

a) Tallness is dominant character

b) Shortness is dominant character

c) Tallness is recessive trait

d) Height of pea plant is not

governed by gene T or t

296- If a round green seeded

plant (RRyy) is crossed with

wrinkled, yellow seeded plant

(rrYY),the seeds produced in F1

are :

a) Round and yellow

b) Round and green

c) wrinkled and green

d) wrinkled and yellow

297- Select the correct

statement.

a) Tendril of pea plant and

phylloclade of opuntia are

homologous

28

b) Tendril of pea plant and

phylloclade of opuntia are

analogous

c) wings of birds and limbs of

lizards are analogous

d) wings of birds and wings of bat

are homologous

298- In peas, a pure tall plant

(TT) is crossed with a short plant

(tt). The ratio of pure tall to

short plants in F2 is ?

a) 1:3

b) 3:1

c) 1:1

d) 2:1

299- New species may be

formed if ______.

a) DNA do not undergoes significant

changes in germ cells

b) Chromosomes number changes

in gametes

c) There is no change in genetic

material

d) Mating does not take place :

300- The number of sex

chromosomes in zygote of

humans is_______.

a) 1

b) 2

c) 3

d) 4

301- Select the group which

shares the maximum number of

common characters?

a) Two individuals of a species

b) Two species of genus

c) Two genera of a family

d) Two genera of two families

302- In human males all the

chromosomes are paired

perfectly except one. These

unpaired chromosomes are

_______.

a) large chromosomes

b) small chromosomes

c) Y chromosomes

d) Z chromosomes

303- If the fossil of an organism

is found in the deeper layers of

earth, then we can predict that

__________.

a) The extinction of organism has

occured recently

b) The extinction of organism has

occured years ago

c) The fossil position in the layers

pf earth is not related to its time

of extinction

d) Time of extinction can not be

determined

304- In evolutionary terms , we

have more in common with

_____________.

a) A chinese boy

b) A chimpanzee

c) A spider

d) A bacteria

305- An example of homologous

organs are ___________.

a) Our arm and dog s fore leg

b) Our teeth and elephants tusks

c) Potato and runners of grass

d) All

306- According to evolutionary

theory, formation of a new

species is generally due to

________.

a) Sudden creation of nature

29

b) Accumulation of variations over

several generations

c) Clones formed during sexual

reproduction

d) Movement of individuals from

one habitat to another

307- Some dinosaurs had

feathers although they could fly

but birds have feathers that help

them to fly. In the context of

evolution this means that --------

---.

a) Reptiles have evolved from birds

b) There is no evolutionary

connection between reptiles and

birds

c) Feathers are homologous organs

in both structures

d) Birds have evolved from reptiles


totally impossible outcome of

Mendel's Experiment?

a) 3 tall 1 short

b) 24 tall 8 short

c) 8 tall 0 short

d) 4 tall 1 medium height


not a direct conclusion that can

be drawn from Mendel's

Experiment?

a) Only one parental trait is

expressed

b) Two copies of each trait is

inherited in sexually transmitted

organism

c) For recessive trait to be

expressed , both copies should

be identical

d) Natural selection can alter

frequency of inherited trait

310- Which section of DNA

provides information for one

protein?

a) Nucleus

b) Trait

c) chromosome

d) gene

311- What is the probability that

the male progeny will be a boy?

a) 50%

b) 56%

c) 45%

d) it varies

312- Who have a perfect pair of

sex chromosomes?

a) Girls

b) Boys

c) Both

d) It depends upon many factors

313- With whom you can

associate theory of evolution?

a) Charles Darwin

b) Mendel

c) Stanley miller

d) Harold urey

314- Which of the following can

be called a characteristic?

a) plants can photosynthesise

b) we have two eyes

c) Mango tree is multicellular

d) All


statements is not true with

respect to variation?

a) All variations in a species have

equal chance of survival

b) Change in genetic composition

results in variation

c) Selection of variants by

environmental factors forms the

30

basis of evolutionary D)

processes.

d) Variation is minimum in asexual

reproduction

316- A trait in an organism is

influenced by__________.

a) paternal DNA

b) Maternal DNA

c) Both paternal and maternal DNA

d) None

317- Select the group which

shares maximum number of

common characters ?

a) two individuals of a species

b) two individuals of a same genus

c) two individuals of a same order

d) two individuals of a same families

318- According to the

evolutionary theory, formation of

a new species is generally due to

_____.

a) sudden creation by nature

b) accumulation of variations over

several generations

c) clones formed during asexual

reproduction

d) movement of individuals from one

habitat to another


totally impossible outcome of

Mendel's experiment ?

a) 3tall 1 short

b) 24 tall 8 short

c) 8 tall 0 short

d) 4 tall and 1 medium height

320- Which one is possible

progeny in F2 generation of pure

breed tall with round seed and

short plant with wrinkled seed ?

a) Tall plant with round seed

b) Tall plant with wrinkled seed

c) short plant with round seed

d) all


not controlled by genes ?

a) weight of a person

b) height of a person

c) Only 1

d) sometimes one sometimes 2

322- Homologous organs have

______

a) same structure same function

b) different structure different

function

c) same structure different function

d) different structure same function

323- The rule of

_____determines the process by

which traits and characteristics

are reliably inherited .

a) Heredity

b) Reproduction

c) generation

d) none

324- DNA is the information

source for making ___in cells .

a) fats

b) vitamins

c) proteins

d) all

325- If this enzyme works

efficiently then __________.

a) a lot of hormone is made

b) a plant will be tall

c) both a and b

d) none

326- Each cell has two copies of

each chromosome ________.

31

a) one each from male and female

parents

b) from male parent

c) from female parent

d) any of above

327- In few reptiles, the ___ at

which fertilized eggs are kept

determines the sex of offspring .

a) temperature

b) pressure

c) place

d) all

328- Men have a ___ pair of sex

chromosomes .

a) perfect

b) matched

c) mismatched

d) any of above

329. The basket of vegetables

contains carrots, potato, radish

and tomato. Which of them

represents the correct

homologous structures ?

a) carrot and Potato

b) Carrot and Tomato

c) Radish and carrot

d) Radish and potato

330. A character which is

expressed in hybrid is always

________.

a) Dominant

b) Recessive

c) Co-dominant

d) Epistatic

331- The frequency of certain

genes in a population changed

over generations. This is the

essence of the idea of ___

a) Revolution

b) Evolution

c) Reproduction

d) production

332- Theory of evolution is given

by _____.

a) JBS Haldane

b) Stanley

c) Charles Darwin

d) Gregor Mendel

333- The preserved traces of

living organisms are called

________.

a) Fossils

b) Species

c) Non living materials

d) None

334- Following have four

limbs________.

a) Mammals

b) Amphibians

c) Reptiles

d) All

335 - ___is used for studying

human evolution .

a) Excavating

b) Time dating

c) Determining DNA sequence

d) All

336 - The earliest member of

human species, Homosapiens

can be traced from:

a) West asia

b) Australia

c) East asia

d) Africa

337- The exchange in genetic

material takes place in _____.

a) vegetative propagation

b) Asexual reproduction

c) sexual reproduction

32

d) budding

338 - Which of the following

statements is incorrect ?

a) for every hormone there is a

gene

b) For every protein there is a gene

c) For production of every enzyme

there is a gene

d) For every fat molecule there is a

gene

339 - The maleness of a child is

determined by ___.

a) X chromosome in zygote

b) Y chromosome in zygote

c) The cytoplasm of germ cells

which determines the sex

d) Sex is determined by chance

340 - Select the incorrect

statement :

a) Frequency of certain genes in a

population change over several

generations resulting in

evolution

b) Reduction in weight of organism

due to starvation is genetically

controlled

c) Low weight parents can have

heavy weight progeny

d) Traits which are not inherited

over generation do not cause

evolution

341. Restriction enzymes were

discovered by

a) Smith and Nathans

b) Alexander Fleming

c) Berg

d) None

342. Bacteria protect themselves

from viruses by fragmenting viral

DNA with

a) Ligase

b) Endonuclease

c) Exonuclease

d) Gyrase

343. Klenow fragment is derived

from

a) DNA Ligase

b) DNA Pol-I

c) DNA Pol-II

d) Reverse Transcriptase

344. Southern blotting is

a) Attachment of probes to DNA

fragments

b) Transfer of DNA fragments from

electrophoretic gel to a

nitrocellulose sheet

c) Comparison of DNA fragments to

two sources

d) Transfer of DNA fragments to

electrophoretic gel from cellulose

membrane

345. ELISA is

a) Using radiolabelled second

antibody

b) Usage of RBCs

c) Using complement-mediated cell

lysis

d) Addition of substrate that is

converted into a coloured end

product

346. The Golden Rice variety is

rich in

a) Vitamin C

b) Β-carotene and ferritin

c) Biotin

d) Lysine

347. The DNA fragments have

sticky ends due to

33

a) Endonuclease

b) Unpaired bases

c) Calcium ions

d) Free methylation

348. Plasmids are used as

cloning vectors for which of the

following reasons?

a) Can be multiplied in culture

b) Self-replication in bacterial cells

c) Can be multiplied in laboratories

with the help of enzymes

d) Replicate freely outside bacterial

cells

349. The human genome project

was launched in the year

a) 1980

b) 1973

c) 1990

d) 1989

350. The vaccines prepared

through recombinant DNA

technology are

a) Third generation vaccines

b) First-generation vaccines

c) Second-generation vaccines

d) None

351. Which is a genetically

modified crop?

a) Bt-cotton

b) Bt-brinjal

c) Golden rice

d) All

352. PCR technique was invented

by

a) Karry Mullis

b) Boyer

c) Sanger

d) Cohn

353. The first transgenic plant to

be produced is

a) Brinjal

b) Tobacco

c) Rice

d) Cotton

354. RNA interference helps in

a) Cell proliferation

b) Micropropagation

c) Cell defence

d) Cell differentiation

355. Which of the following is

the quality of improved

transgenic basmati rice?

a) Gives high yield but no

characteristic aroma

b) Gives high yield and is rich in

vitamin A

c) Does not require chemical

fertilizers and growth hormones

d) Resistant to insects and diseases

356. The first clinical application

of gene therapy over a 4 year old

girl was for

a) Adenosine deaminase deficiency

b) Adenosine deficiency

c) Growth deficiency

d) Adenine deficiency

357. Excision and insertion of a

gene is called

a) Biotechnology

b) Genetic engineering

c) Cytogenetics

d) Gene therapy

358. The expression of a

transgene in the target tissue is

identified by a

a) Transgene

34

b) Promoter

c) Enhancer

d) Reporter

359. ———– is used as a vector

for cloning into higher organisms

a) Retrovirus

b) Baculovirus

c) Salmonella typhimurium

d) Rhizopus nigricans

360. Which bacterium is used in

the production of insulin by

genetic engineering?

a) Saccharomyces

b) Rhizobium

c) Escherichia

d) Mycobacterium

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