Chapter 12 Lesson 1 Support, Control, and Movement

An earthworm has a(n) ____________.

• undulation

• hydrostatic skeleton

• coelom

• nerve net

Snakes, fishes, and eels move by _________, using their muscles to push their bodies forward.

• undulation

• hydrostatic skeleton

• coelom

• nerve net

An animal with radical symmetry and no brain has a(n) ________ with a central ring that controls its body.

• undulation

• hydrostatic skeleton

• coelom

• nerve net

By pushing fluid in different directions, the muscles that surround the ________ help some organisms move.

• undulation

• hydrostatic skeleton

• coelom

• nerve net

A coelom is part of a(n)

• exoskeleton

• endoskeleton

• hydrostatic skeleton

• nerve net

Which animal uses an exoskeleton for support?

• a crab

• a bird

• a jellyfish

• an alligator

Which animal uses a nerve net as a control system?

• a zebra

• a planarian

• a cnidarian

• a elephant

In vertebrates, a nerve cord is called a

• brain

• skeleton

• spinal cord

• back

Tags

NGSS.MS-LS4-2

Mammals and birds get support from

• coeloms

• exoskeletons

• endoskeletons

• nerve net

Which animal has an endoskeleton and an exoskeleton?

• a crab

• a turtle

• a lobster

• an earthworm