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STANDARD TEST 2/2012Time: 1 hour 30 minutes

(50 Marks)

Section A: (20 marks)Instructions: Answer all the question below. Each question is followed by four options A, B,C and D. Choose the correct answer and write your answer in the sheet provided.

1. Diagram 1 shows the stages in ovum formation. Which of the cells, A, B, C and D is anovum?

Diagram 1

2. Which of the following is not an effect of hormonal imbalance? A PregnancyB MiscarriageC MenopauseD Premenstrual Syndrome

3. Diagram 2 shows a foetus, the placenta and uterine wall. Which substances aretransported from X to Y?

Diagram 2 A Carbon dioxide and glucoseB Carbon dioxide and ureaC Oxygen and glucoseD Oxygen and urea

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4. Which is the correct sequence of the development of human zygote? A Zygote morula blastocyst embryo B Zygote blastocyst morula embryo C Zygote embryo blastocyst morula D Zygote embryo morula blastocyst

5. A woman has a blockage in both her fallopian tubes. Which treatment could help thewoman to get pregnant?

A Intrauterine DeviceB Invitro fertilisarionC Fertility PillsD Artificial Inseminations

6. Diagram 3 shows a cross section of the carpel of a plant.

Diagram 3

Which structure A, B, C and D is an egg cell?

7. Diagram shows a pollen tube which has germinated.

Diagram 4Which of the following are true about X and Y?

X YI Tube nucleus Male nucleiII Will disintegrate Will not disintegrateIII Involved in double fertilisation Not involved in double fertilisationIV Originate from one nucleus that has divided Does not divide

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A I and IIB I and IIIC II and IVD III and IV

8. Diagram 5 shows a cross section of dicotyledonous root which has undergone secondarygrowth.

Diagram 5What is the part labelled X?

A Primary xylemB Secondary xylemC Primary phloemD Secondary phloem

9. Which term refers to the physical characters of an organism? A GenotypeB PhenotypeC HomozygousD Heterozygous

10. Diagram 6 shows the human male reproductive system. Which of the labelled parts A, B,C or D is the site of spermatogenesis?

Diagram 6

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11.. Diagram 7 shows the human female reproductive system.

Diagram 7

Which of the labelled parts A, B, C or D is the site of implantation of a fertilised egg cell?

12. Diagram 8 shows the phases of hormonal level during the menstrual cycle. Which of thefollowing are true about the major events that occur during the menstrual cycle?

Diagram 8

Phase EventI P Repairing of endometriumII Q Repairing of endometriumIII S Thickening of endometriumIV R Ovulation

A I, II and IIIB I, II and IVC II, III and IVD I, II, III and IV

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13. Which of the following is the blastocyst stage of the development of a human embryo?

14. Diagram 9 shows the structure of a flower. Male gametes can be produced by whichparts A, B, C or D this flower?

Diagram 9

15. Diagram 10 shows the development of an embryo sac in the ovule of a flowering plant.

How many nuclei are present in X?

Diagram 10 A 2 B 8C 4 D 16

16. Which of the following structures is embedded in the endometrium after about five daysof fertilisation?

A ZygoteB MorulaC Embryo

D Blastocyst

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17. Which of the following is correctly described as the major event during the menstrualcycle?

Day Occurence A 0-5 Thickening of endometriumB 15-21 MenstruationC 0-5 The mensesD 5-13 Vascularisation of endometrium

18. Diagram shows a root tip of a plant. Which parts of the root tip A, B, C or D isresponsible for cell differentiation?

19. Which of the following is the characteristic of wind-pollinated pollen grains? A Small size and lightB Have rough surfaceC Have attractive coloursD Contain large food storage

20. Which of the following are the common causes of infertility in a couple?I Blockage of sperm ductII Inability to produce ovaIII Low sperm countIV Blockage of Fallopian tube

A I, II and IIIB I, II and IVC II, III and IVDI, II, III and IV

ANSWERS

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

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Section B: 30 marksInstructions: Answer all the question below. Answer and write your answer in the space

provided.

1. Diagram 1 shows a human foetus in his mothers uterus.

Diagram 1

(a) Name the structures labelled R and S.R: _______________________________________________________________________

S: _______________________________________________________________________

[ 2 Marks ]

(b) Explain the composition of the blood that flows through the blood vessels in S. _________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

[ 2 Marks ]

(c) The structure R is needed to maintain the thickness of the uterine wall. Explain thisstatement.

_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

[ 3 Marks ]

(d) (i) State the type of immunity the foetus gets from his mother.

_________________________________________________________________________

[ 1 Mark ]

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(ii) Explain the importance of structure R to the body defence of the foetus. _________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

[ 3 Marks ]

(e) Explain why the foetus has a separate blood circulatory system from his mother. _________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

[ 2 Marks ]

2. Diagram 2.1 shows processes in the formation of cell R.

Diagram 2.1(a) (i) State the number of chromosomes in cell P and Q.

P: _______________________________________________________________________

Q: _______________________________________________________________________

[ 2 Marks ]

(ii) Explain what has happened to cause the difference in chromosome number between cellP and cell Q.

_________________________________________________________________________ _________________________________________________________________________

_________________________________________________________________________

________________________________________________________________________

[ 2 Marks ](b) Name the process of the formation of cell R.

_________________________________________________________________________

[ 1 Mark ]

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(c) Diagram 2.2 shows the formation of a type of genetic disorder.

Diagram 2.2

(i) State two characteristics of this genetic disorder

1. _______________________________________________________________________

2. _______________________________________________________________________

[ 2 Marks ]

(ii) Explain how a fault in the formation of cell R can cause this genetic disorder.

_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________________

________________________________________________________________________

[ 2 Marks ]

3. Diagram 3 shows a longitudinal section of a reproductive organ of a flower duringfertilisation.

Diagram 3a) Based on diagram, label structure P, Q, and R.

[ 3 Marks ]

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b) (i) Draw and label a detail structure of a longitudinal section of structure S.

[ 2 Marks ]

(ii) State the reason for having two structures R in the double fertilisation. _________________________________________________________________________

_________________________________________________________________________

[ 2 Marks ]

(iii) What is the importance of having double fertilisation in plant?

_________________________________________________________________________

[ 1 Mark ]

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Name: ____________________________ Class: _____________ BiologyJuly 2013

MAKTAB SABAHKOTA KINABALU , SABAH

STANDARD TEST 2 2013

BIOLOGYFORM 5

One hour thirty minutes

DO NOT OPEN THIS QUESTION BOOK UNTIL YOU ARE INSTRUCTED

1. This question paper consists of two section only.

2. There are 20 objective questions and three subjectives questions.

3. Answer all questions.

4. Answer each question by writing the correct answers on the answer sheet.

5. The diagrams in the questions provided are not drawn to scale unless stated.

6. You may use a non-programmable scientific calculator .

___________________________________________________________________________ This question paper consist of 11 printed pages