Archimedes School
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Worksheet
Science | Grade 3 | Chapter 2
“How are living things grouped?”
Name _____________________ Class ___
Deadline: _______________
Question 1. Circle the odd one out.
a. Dog
Frog
Turtle
Dragonfly
b. Chicken
Dog
Parrot
Duck
c. Shark
Whales
Dolphin
Cat
d. Turtle
Tortoise
Frog
Snake
Question 2. Put these numbers in the correct column.
1. Live in water
2. Live on land
3. Have gills
4. Lay eggs on land
6. Have fur
7. Have feather
8. Have wings
9. Have scale
11. Moist skin
Fish
12. Nurture young one by milk
Mammals
5. Give birth
10. Cool-blooded
13. Lay eggs in water
Birds
Reptiles
Amphibians
The number of
reptiles
The number of
birds
Question 3. Count the numbers of these animals in the box below.
The number of
mammals
The numbers of
fish
The numbers of
amphibians
1
Question 3. Look at the dichotomous key below.
Pigeon
Snake
Lion
Goldfish
Frog
a. Based on the dichotomous key, circle the characteristics of the frog:
Can fly
Have fur
Have legs
Reproduce on land
b. Based on the dichotomous key, circle the characteristics of the pigeon:
Can fly
Have fur
Have legs
c. Based on the dichotomous key, circle the characteristics of the lion:
2
Reproduce on land
Can fly
Have fur
Have legs
Reproduce on land
d. Based on the dichotomous key, circle the characteristics of the snake:
Can fly
Have fur
Have legs
Reproduce on land
e. Based on the dichotomous key, circle the characteristics of the goldfish:
Can fly
Have fur
Have legs
3
Reproduce on land