Mollusks and Annelids

Front

What structure allows the squid to steer, change directions, stabilize their position, and propel at slow speeds?

Back

Fin

Front

What term refers to the head or front of an organism?

Back

Anterior

Front

Which class of Mollusks has a closed circulatory system?

Back

Cephalopods

Front

What type of symmetry do most mollusks have?

Back

Bilateral

Front

What are some benefits of having earthworms living in our soil?

Back

They aerate the soil, their castings are rich in calcium carbonate, and they are a food source for many small animals.

Front

What is the main body structure of a mollusk that covers the internal organs?

Back

Mantle

Front

What is the term for the hard, protective outer layer of some mollusks?

Back

Shell

Front

What is the primary function of the siphon in cephalopods?

Back

To expel water for propulsion.

Front

What is the term for the underside of an organism?

Back

Ventral

Front

What is the primary feeding structure in many mollusks?

Back

Radula