External Structures of Animals

Elly is studying different ways that animals' external structures help protect them. Which structure should Elly study?

• heart

• scales

• skeleton

• lungs

Look at the picture. Which external structure helps protect the animal shown?

• 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

Tags

NGSS.4-LS1-1

Select the best example of an exoskeleton protecting an animal.

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Tags

NGSS.MS-LS4-2

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

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External structures can help animals survive. Sharp structures on the feet of some animals are called ______

• claws

• beaks

• eyes

Tags

NGSS.4-LS1-1