TCI U1 L6 Animal Suport and Movement

How do feathers help birds fly?

• They make the bird light.
• They keep the bird warm.
• tehy protect the bird from injury.
• They make the bird's body smooth.

Which animal does this describe? The animal's body has water-filled structures. It contracts muscles throughout its body to move. It has tiny hairs on the bottom of its body.

• squid
• snail
• snake
• earthworm

A(n) ___ is a flattened rigid plate that forms an outer covering on a fish.

• exoskeleton
• fin
• scale
• skeleton

____ is a strong and flexible material found in a skileton.

• Bone
• Joint
• Cartilage
• Exoskeleton

Which of the following is an example of a hinge joint?

• hip
• elbow
• spine
• shoulder

____ contracts and relaxes to produce movement.

• joint
• muscle
• bone
• cartilage

Which of the following is an example of a muscle that is not attached to a bone?

• heart
• arm
• neck
• all of the above

____ is a stiff, flattened plate that forms a protective covering.

• A fin
• A scale
• A feather
• An exoskeleton

Unlike bones, an exoskeleton

• protects soft parts.
• supports the body
• is on the outside.
• is made of hard material.

Some caterpillars ___ to protect themselves from danger.

• have quills
• have scales
• produce chemicals
• all of the above