Animal Groups — Answer Key
Part A: Multiple Choice
Circle the correct answer for each question.
1. Which is NOT a characteristic of mammals?
A) Breathe air
B) Have hair or fur
C) Feed young with milk
D) Have scales
The correct answer is D) Have scales.
2. Frogs and salamanders both belong to which group?
A) Reptiles
B) Fish
C) Amphibians
D) Mammals
The correct answer is C) Amphibians.
3. Which animal is cold-blooded?
A) Dog
B) Whale
C) Eagle
D) Crocodile
The correct answer is D) Crocodile.
4. What do fish use to breathe underwater?
A) Lungs
B) Gills
C) Skin
D) Feathers
The correct answer is B) Gills.
Part B: Fill in the Blank
Write the missing word on the line.
1. Warm-blooded animals can regulate their own body temperature.
The correct answer is 'regulate'. Warm-blooded animals can regulate their own body temperature.
2. Cold-blooded animals depend on the sun to warm their bodies.
The correct answer is 'the sun'. Cold-blooded animals depend on the sun to warm their bodies.
3. Birds, reptiles, and fish all lay eggs.
The correct answer is 'eggs'. Birds, reptiles, and fish all lay eggs.
4. The group that includes humans, dogs, and whales is mammals.
The correct answer is 'mammals'. The group that includes humans, dogs, and whales is mammals.
5. Amphibians have moist skin (not scales or fur).
The correct answer is 'moist'. Amphibians have moist skin (not scales or fur).