Animal Groups — Answer Key
Part A: Fill in the Blank
Write the missing word on the line.
1. Dogs, cats, and humans are all mammals.
The correct answer is 'mammals'. Dogs, cats, and humans are all mammals.
2. Penguins are birds but they cannot fly.
The correct answer is 'fly'. Penguins are birds but they cannot fly.
3. Crocodiles are large reptiles.
The correct answer is 'reptiles'. Crocodiles are large reptiles.
4. Sharks are a type of fish.
The correct answer is 'fish'. Sharks are a type of fish.
5. Frogs start life as tadpoles in water.
The correct answer is 'tadpoles'. Frogs start life as tadpoles in water.
6. Mammals give birth to live young (except the platypus).
The correct answer is 'young'. Mammals give birth to live young (except the platypus).
7. A bird's body is covered in feathers.
The correct answer is 'feathers'. A bird's body is covered in feathers.
8. Reptiles lay eggs on land.
The correct answer is 'land'. Reptiles lay eggs on land.
9. Goldfish and trout are types of fish.
The correct answer is 'fish'. Goldfish and trout are types of fish.
Part B: Match the Group to Its Feature
Draw a line from each animal group to its key feature.
1.
mammals
→ have fur and feed milk to young
live in water and on land
birds
→ have feathers and wings
have feathers and wings
reptiles
→ have scales and are cold-blooded
have scales and are cold-blooded
amphibians
→ live in water and on land
have fur and feed milk to young
Match each item with its correct partner. The correct matches are: mammals → have fur and feed milk to young; birds → have feathers and wings; reptiles → have scales and are cold-blooded; amphibians → live in water and on land.