This is the outer layer of skin on molluscs, and is responsible for excreting the substance that forms the mollusc's shell (if present).

The shell of a mollusc is made out of what compound?

The Latin term for stomach-foot is ____.

Molluscs that have 2 shells are members of the class

How do bivalves eat?

These molluscs have a head and a modified foot that are now arms or tentacles.

What class of molluscs does the nautilus belong to?

What does the term mollusca mean in Latin?

Which of the following is NOT a characteristic of arthropods?

Since the exoskeleton limits the growth of arthropods, they have to shed their exoskeletons and form a new one. This is called ____.

Male crabs have a ____ -shaped abdomen while a female crabs abdomen is ____ -shaped

Decapods have ______ legs.

The term 'arthropod' literally means

Which of the following is not a decapod?