Animals & Plant Reproduction

8/7/2019 Animals & Plant Reproduction

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REPRODUCTION

y To ensure the survival of animalspecies.

y Animals reproduce in two ways: Give birth 2. Lay eggs

GIVE BIRTH

Mammals:

ywarm blooded animals.yF

eed young = milksyTake care young until they can live on

their own.

ySome live on landySome live in water

LANDSMAMMALS

yCats, rabbits, goats, lions, elephants


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AQUATICMAMMALS

yWhales, dolphins, dugongs, sealsFLYINGMAMMALS

yBats only

The Only Reptiles!yRattlesnakes give birth

LAY EGGS

yAll types of insects, fish, birds,reptiles and amphibians

ySome of animals take care of their eggsafter laid.

yExample: Chickenand birds lay theireggs in their nests. The female birds

will sit on its eggs to keep then warm


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until the eggs hatch.

yThe animals which take care of theireggs and offspring usually lay very few

eggsySome animals leave their eggs after

laid

MAMMALS THATLAYS EGGSyPlatypus & anteater only

INSECTS

yGrasshopper, butterfly, cockroachFISH

yAll of them

BIRDSyChicken, eagle, duck

REPTILES

yCrocodile, turtle, snake


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AMPHIBIANS

yFrogLIFE CYCLE OF ANIMALS

(METAMORFOSIS)

yAfter the young hatches from the egg,it starts to grow. It may change in size

and shape.This process in called

metamorphosis.

yLife cycle =The complete process ofchange from birth /eggs to the adult

stage.

yYoung look like the parents.Chicken look like hen or rooster

yMost young do not like their parents.Examples: caterpillar, tadpole, larvae


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Morning Glory


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Mimosa pudica


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PLANT REPRODUCE

yTo ensure the survival of their speciesyMethod:

SeedsFlowering plantsFruits seeds - plants

Durian


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R

P y


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SporesNon oweringplantsFern, ossed, algae,fungi ( ushrooms)

Sporesreleasedfromthespore capsules

and carried y wind.

Sporeswillstarttogrowwhenthey land

onsoilundersuitable conditions, where

they haveenoughhumus, water, and

correcttemperature


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LeavesLeafdropstosoil, thebudsattheedgeoftheleafwillgrowinto

newplants

Byrophyllumleaf

Begonia


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Stem cuttingsStem cut from parents plant and

planted in the soil

The buds on the stem will growinto new plants

Stem cutting is an exampleartificial reproduction

Example: tapioca plants, hibiscusplant, rose plants, sugar cane

plants.


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Underground stemsThe underground stem has buds

which grow into new plants

It also contains stored food forthe buds to grow

Examples: potato, onion, ginger,turmeric


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suckersnew shoots that grow from the

underground stems or roots of a

parent plantsThese young plants grows around

the parents plants


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Example: Banana tress, bambootrees, yam plants and pineapple

plant


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Animals & Plant Reproduction