Life Cycles of Animals — Answer Key
Part A: Trace the Words
Trace each word carefully by following the dotted lines.
1. egg
2. pupa
3. adult
4. grow
5. cycle
6. larva
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A pupa is wrapped in a cocoon.
A hen lays an egg, and a baby chick grows inside it. The egg keeps the chick safe until it is ready to hatch.
2. A tadpole will grow into a frog.
A caterpillar is the larva stage of a butterfly. Scientists call it a larva because it is a young form that will change shape later.
3. A hen sits on her eggs to keep them warm.
A life cycle shows all the stages an animal goes through from birth to adulthood. A frog's cycle goes from egg to tadpole to frog.
4. A caterpillar eats lots of leaves.
The butterfly is the adult stage. After changing inside the chrysalis, the caterpillar becomes a beautiful adult butterfly.
Part C: True or False?
Read each statement. Circle True or False.
1. A tadpole has legs when it is born.
True False
True. A baby chick will grow into a hen (girl chicken) or a rooster (boy chicken) as it gets bigger.
2. A butterfly comes out of a cocoon.
True False
False. A pupa cannot fly or eat. It stays still inside its chrysalis or cocoon while it changes into an adult.
3. Eggs need warmth to hatch.
True False
True. Both frogs and butterflies begin their life cycles as eggs, even though they grow into very different animals.