A ________ is a framework that shapes and supports an animal, protects its internal organs, and allows it to move in its environment

• endoskeleton

• exoskeleton

• skeleton

• muscular system

Animals with an exoskeleton must use a process called _______ to grow bigger.

• camoflauge

• molting

• shedding

• moving

A __________ is a place where two or more parts of a skeleton meet.

• foot

• tube

• muscle fiber

• joint

Which is true of the skeleton shown here?

• It grows with the animal.

• It molts as the animal grows.

• It does not have hard parts.

• It is mostly cartilage.

What are the benefits of a fish having a swim bladder? Choose all that apply.

• It can save energy swimming.

• It can control the depth it swims at.

• It can filter the water and remove chemicals.

• It helps to do jet propulsion.

Select the reasons why an animal might need to move about.

• To avoid prey.

• To hunt for food.

• To hide from predators.

• To find a mate.

This technology is inspired by which animal feature?

• bird's wings

• streamlined beak and body

• soft body

• jet propulsion

What feature helps a monkey travel in the trees?

• long arms

• webbed feet

• streamlined body

• hairy body

Bats, birds, and beetles can fly. Their wings are all made the same.

• True

• False

Birds have hollow bones to keep them light for flying, but penguins have ______ bones that make it easier for diving.

• empty

• living

• solid

• short