Animal Groups — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which animal group lays eggs and has feathers?
A) mammals
B) reptiles
C) birds
D) fish
Reptiles like snakes, lizards, and crocodiles are covered in dry scales that overlap like roof tiles to protect their bodies and lock in water.
2. A frog belongs to which group?
A) reptiles
B) amphibians
C) mammals
D) insects
A toad is an amphibian, so it can hop around on land and also swim in ponds. Amphibians are the special group that lives in both places.
3. Which animal breathes with gills?
A) whale
B) lizard
C) trout
D) sparrow
Every insect has six legs attached to the middle part of its body called the thorax. Counting six legs is the quickest way to spot an insect.
4. What covers a reptile body?
A) fur
B) feathers
C) scales
D) slime
A turtle is a reptile, not a mammal. It has scales and a shell instead of fur, and it lays eggs on land instead of giving birth to live babies.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A dolphin is a mammal, not a fish.
Fish scales are small, shiny plates that overlap on a fish's skin like armor, protecting its body and helping it slip smoothly through the water.
2. Insects have six legs.
Newts and frogs are amphibians with wet, slippery skin that they use to help them breathe, so they must stay near water to keep it moist.
3. Reptiles are cold blooded animals.
A nest is a cup woven from twigs, grass, and mud where a robin lays its blue eggs and sits on them high in a tree, away from predators.
4. An owl is a bird that hunts at night.
Bats may look like birds when they fly, but their bodies are covered in soft fur and mother bats feed milk to their pups, just like other mammals.
5. A caterpillar turns into a butterfly.
A backbone is the long line of small bones running down your back, and animals with backbones like fish, birds, and mammals are called vertebrates.