TCI U1 L6 Animal Suport and Movement-I

How do feathers help birds fly?

• 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.

• snake
• earthworm

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

• scale
• skeleton

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

• Cartilage
• Exoskeleton

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

• hip
• elbow

____ contracts and relaxes to produce movement.

• joint
• muscle

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

• heart
• arm

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

• A fin
• A scale

Unlike bones, an exoskeleton

• is on the outside.
• is made of hard material.

Some caterpillars ___ to protect themselves from danger.

• produce chemicals
• all of the above