Invertebrates

Which worm has a body divided into sections?

What is the name of the opening through which water enters a sponge?

What is the name of the covering that protects the organs of a mollusk?

Which living thing lives in or on another living thing and harms it?

Spiny-skinned invertebrate

Worm with a round body and two body openings.

All animals without a backbone

Soft-bodied invertebrate with head, foot and body mass

Special cells that contains a poisonous thread

Worm with a flattened body and one opening