Topic 7 Lesson 4 External Structures & Functions of Animals

Elyse is studying different ways that animals’ external structures help protect them.

Which structure should Elyse study?

• heart

• scales

• skeleton

• lungs

Look at the picture.

Which external structure protects the animal shown?

• scales

• skin

• feathers

• exoskeleton

Which describes an external characteristic of an animal?

• a bear's loud roar

• a bird's blue feathers

• a human's long bones

• a cat's rigid skeleton

Tags

NGSS.MS-LS4-2

Select the best example of an exoskeleton protecting an animal.

• A

• B

• C

• D

Which external structure of an animal provides the best protection from a very wet environment?

• A

• B

• C

• D

Complete the sentences to explain how animals use their external structures.

External structures can help animals survive. Sharp structures on the feet of some animals are called _____________. These structures help animals catch food. Other sharp external structures that help animals survive are beaks and teeth.

• feet

• claws

• lungs

• toe nails

Tags

NGSS.4-LS1-1

Complete the sentences to explain how animals use their external structures.

External structures can help animals survive. Sharp structures on the feet of some animals are called claws. These structures help animals catch ____________. Other sharp external structures that help animals survive are beaks and teeth.

• water

• food

• hay

• cookies

Tags

NGSS.4-LS1-1