Animal Groups — Answer Key
Part A: Trace the Words
Trace each animal word by following the dotted lines.
1. fish
2. amphibian
3. scales
4. feather
Part B: Fill in the Blank
Write the missing word on the line.
1. Amphibians can live on land and in water.
Amphibians can live on land and in water. They usually begin life in water and later develop the ability to live on land.
2. A frog starts life as a tadpole in water.
A frog starts life as a tadpole that swims in water and breathes with gills. Over time it grows legs and becomes a frog.
3. Mammals feed their babies with milk.
Mammals feed their babies with milk from the mother. This is one of the defining traits that makes an animal a mammal.
4. A butterfly is an insect because it has six legs.
A butterfly is an insect because it has six legs and three body parts. Insects are the largest group of animals on Earth.
5. Fish have fins to help them swim.
Fish have fins to help them swim and steer through the water. Different fins serve different purposes for balance and direction.
Part C: True or False
Read each sentence. Circle True or False.
1. Frogs are amphibians.
True False
True — Frogs are amphibians because they start life in water as tadpoles and later live on land as adult frogs.
2. Fish can live on land.
True False
False — Fish cannot live on land. They need water to breathe through their gills and to survive.
3. Insects have eight legs.
True False
False — Insects have six legs, not eight. Animals with eight legs, like spiders, belong to a different group called arachnids.