The Worms

Flatworms have no true body cavity. This means they are ____________________. 

• Symmetrical
• Sessile
• Coelomates
• Acoelomates

What is cephalization? 

• Having male and female parts.
• A concentration of sense organs and nervous system at the anterior end of the body. 
• Feeding off of another organism.
• Breathing through the skin.

What is an animal called that can produce both sperm and eggs?

• Flatworms

• Hermaphroditic

• Cnidarians

• Cephalization

What type of symmetry do Platyhelminthes, Nematoda, and Annelida have?

• Bilateral

• Asymmetrical

• Radial

• Round

What is the common name for Platyhelminthes?

• roundworms

• flatworms

• segmented worms

• parasitic worms

Tags

NGSS.MS-LS4-2

Which of the following would be the least likely habitat of a flatworm and roundworm?

• desert

• wetland

• ocean

• inside a host

Used for movement in nematodes

• legs

• muscles

• segmentation

• hydrostatic skeleton

Roundworms have a partial body cavity called

• pseudocoelom

• acoelom

• eucoelom

• coelom

Which of the following is a false statement?

• Earthworms aerate the soil

• Earthworms distribute organic matter

• Earthworms remove nutrients from soil

• Earthworms allow for water to go deeper into the soil

What is the definition of a "host"?

• An organism that lives on another organism.

• The organism that a parasite uses to get nutrition.

• The organism that finds food on its own.

• An organism that parasites find easily.