Science Worksheet For Grade 2 Students - Identifying And Grouping Animals

This worksheet on identifying and grouping animals will give essential practice to second graders on recognizing the group to which an animal belongs.

1. Study the animal below.

Which of the following are its characteristics?
A. It can fly
B. It has six legs
C. It feeds on nectar
D. Its young resemble the adult
(1) A and B only
(2) A, B and C only
(3) B, C and D only
(4) A, B, C and D

2. Study the following animals.

What is their common characteristic?
(1) They are birds.
(2) They are mammals.
(3) They breathe through lungs.
(4) They reproduce by laying eggs.

3. Study the animals below.

This is a cricket and a centipede. List three differences between these two animals. (Do not compare sizes and shapes.)
(1)………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….
(2)………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..
(3)…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

4. Study the flow chart below.

(a) Based on the flow chart, list the characteristics of animal B
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
(b) Write down one difference between animal A and animal D.
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..
(c)Which animal group does animal D belong to?
………………………………………………………………………………………………………………
(d) Underline the name(s) of the animal(s) which can be represented by animal C in the flow chart.

5. Study the pictures of a cat, a platypus and a frog below.

(a) Complete the table below.

(b) Compare the number of eggs laid by a platypus and a frog. Give a possible reason why a frog lays many more eggs that a platypus.

6. Write true (T) or false (F)
a. Fish breathe with lungs
b. Mammals are vertebrates
c. Reptiles are cold-blooded
d. Amphibians do not have moist skin
e. Birds have a pair of wings
f. Insects lay eggs
g. Birds are cold blooded
h. Mammals suckle their young
i. Reptiles are covered with scales
j. Amphibians breathe with lungs on land and moist skin in water

7. Are spiders insects? Write why or why not?

Answer Scheme

1. (2) A, B and C only
(Explanation: The animal shown is a butterfly. A butterfly is an insect. It can fly. It has six legs and feeds on nectar. Its young does not resemble an adult butterfly.)

2. (3) They breathe through lungs.
(Explanation: Option 1 is not correct because bats and platypuses are mammals. Option 2 is not correct because penguins are birds. Option 4 is not correct because bats give birth to live young.)

3. (1) A cricket has six legs but a centipede has more than six legs.
(2) A cricket has a pair of wings but a centipede does not have wings.
(3) A cricket has three body parts but a centipede has more than three body parts.

4. (a) Animal B does not swim and it has two pairs of legs.(Explanation: When stating the characteristics of an animal in the flow chart, trace back the arrows from the animal. Pay attention to the ‘yes’ and ‘no’.
(b) Animal A does not swim while animal D swims.
(c) Birds
(d)crocodile
(Explanation: A crocodile can swim and it has scales on its outer body covering. A penguin and a pelican are birds. They have feathers.)

5. (a)

(b)A frog lays more eggs than a platypus does perhaps because some of the eggs laid by the frog would be eaten up by predators. Platypus lays eggs in a burrow underground while frog eggs are usually in the open. Laying more eggs ensures that at least some of the eggs will hatch into young and grow into adults.

6.
a. Fish breathe with lungs (F)
b. Mammals are vertebrates (T)
c. Reptiles are cold-blooded (T)
d. Amphibians do not have moist skin (F)
e. Birds have a pair of wings (T)
f. Insects lay eggs (T)
g. Birds are cold blooded (F)
h. Mammals suckle their young (T)
i. Reptiles are covered with scales (T)
j. Amphibians breathe with lungs on land and moist skin in water (T)

7. Spiders are not insects because, unlike an insect that has six legs, a spider has eight legs. A spider has two body segments while an insect has three body segments. So, spiders are not classified as insects. They are classified as arachnids.