Life Cycles Of Some Animals

© Singapore Asia Publishers Pte LtdWebsite: www.sapgrp.com | Facebook: Singapore-Asia-Publishers

P3/4 science

1. What are the similarities between the adult cockroach and its nymph?A. They have a pair of feelers.B. They have six legs.C. They have wings.(1) A and B only (3) B and C only(2) A and C only (4) A, B and C ( )

2. The table below shows the young of four insects at its second stage. Which of the rowsshows the correct name for each insect?

Housefly Mealwormbeetle Mosquito Butterfly

(1) grub worm chrysalis caterpillar

(2) grub mealworm pupa chrysalis

(3) maggot worm wriggler chrysalis

(4) maggot mealworm wriggler caterpillar ( )

3. Studytheclassificationdiagrambelow.

Animals

Gives birth to young

Four stages of life cycle

Three stages of life cycle

Lays eggs

M

N P

What do the letters, M, N and P, represent?

M N P

(1) guppy grasshopper cockroach

(2) rat frog housefly

(3) spiny anteater crocodile mosquito

(4) peahen chicken butterfly( )

Life Cycles Of Some Animals

SAPSCSP3&4_W18Page 1/8

Taken from NaiL thoSe McQs! PriMary ScieNce LoWer BLock 3/4


P3/4 science

4. The following pictures show the stages in the life cycle of an insect.

A. C.

B. D.

Which is the correct arrangement of the stages in its life cycle?(1) B→A→D→C (3) C→A→D→B(2) C→B→D→A (4) D→A→B→C ()

5. The animals’ life cycles represent some characteristics of living things. What characteristicsare represented in the life cycles?A. Living things need air, water and food.B. Living things grow.C. Living things reproduce.D. Living things die.(1) A and B only (3) B, C and D only(2) B and C only (4) A, B, C and D ( )


Answers: 1. 1 2. 4 3. 2 4. 2 5. 2




P3/4 science

1. Which one of the following diagrams shows the correct order of the life cycle of amosquito?

(1) (3)

(2) (4)

( )

2. Study the life cycle below.

Which of the following can be used to complete the life cycle?

A. C.

B. D.

(1) A and B only (3) A and D only(2) B and C only (4) B and D only ( )

egg

pupa

? adult

pupa

wriggler

egg

mosquito

pupa

wriggler

egg

mosquito

pupa

wriggler

egg

mosquito

wriggler

pupa

egg

mosquito





P3/4 science

3. Studythelifecyclesofabutterflyandagrasshopperbelow.

What is/are the difference(s) between the two life cycles shown above?A. Thegrasshopperhasthreestagesinitslifecyclewhilethebutterflyhasfourstagesinits

life cycle.B. Thegrasshopperlayseggsinwaterwhilethebutterflylayseggsonland.C. Theyoungofthegrasshopperlookslikeitsadultbuttheyoungofthebutterflydoesnot

look like its adult.D. Thenymphofthegrasshoppermoultsbutnotthecaterpillarofthebutterfly.(1) A only (3) A and C only(2) A and B only (4) A, C and D only ( )

Study the flow chart below which shows animals, A, B and C, and answer question.

4. Fourchildrenmadesomecommentsbasedontheflowchartgiven.Ray : Animals A, B and C do not give birth to young alive.Sheila : Animal A has three stages in its life cycle but Animal B has four stages.Terry : Both animals A and C lay eggs on land.Ursula:AnimalBdoesnotlayitseggsonlandandhasthreestagesinitslifecycle.Who had made the wrong comments?(1) RayandSheila (3) TerryandUrsula(2) SheilaandTerry (4) RayandUrsula ()


YesGives birth to young alive?

A

No

No

Three-stage life cycle?

Yes Lays eggs on land?

B

No

C

Answers: 1. 3 2. 3 3. 3 4. 2




P3/4 science

1. Study the life cycle of a frog shown below.

(a) Why does a female frog lay many eggs at a time? [1m]

(b) Why are frog eggs coated with a layer of jelly-like substance? [1m]

(c) Complete the table to show the differences between a tadpole and an adult frog. [3m]

Tadpole Adult frog

Breathing method

Habitat

Food

Life Cycles


Taken from ScieNce ProceSS SkiLLS LoWer BLock 3/4


P3/4 science

Answers To Life Cycles



1. (a) Many eggs are laid at a time to ensure that at least some will hatch, grow into adulthoodand reproduce so as to continue the life cycle.

(b) Thejelly-likesubstancekeepstheeggsafloatandalsopreventsotheraquaticanimalsfrom eating them because of its unpleasant taste.

(c) Tadpole Adult frog

Breathing method Breathes through its gills Breathes through its lungs

Habitat Lives in water Lives on land and in water

Food Feeds on small aquatic plants and, plant and animal matter in the water Feeds on small insects

(Accept any other reasonable answers.)


P3/4 science

1. Look at the list of animals below.

platypus butterfly beetle horse mosquitocrocodile mouse guppy cat goat

(a) Classify the animals into two separate groups in the table below. Give a suitable headingfor each group. [2m]

(b) Intheclassificationdiagrambelow,classifythesamesetofanimalsintothreeseparategroups based on the number of stages in their life cycles. Give a suitable heading foreach group. [3m]

Animals

Life Cycles




P3/4 science

1. (a)Lay eggs Give birth to young alive

platypuscrocodilebutterfly

beetlemosquito

mouseguppyhorse

catgoat

(b)

Answers Life Cycles

Animals

Two-stage life cycle

Four-stage life cyclebutterfly

beetlemosquito

egglarva

pupaadult

egg young

adultyoung adult

Three-stage life cycleplatypuscrocodile

mouseguppyhorse

catgoat



Documents

Life Cycles Of Some Animals