Phylum Mollusca Part 3: Class Bivalvia (Clams, Oysters, Mussels, etc.)

What is the primary characteristic that distinguishes bivalves from gastropods?

• Bivalves have a radula.

• Bivalves have a head.

• Bivalves have no radula.

• Bivalves are not marine.

Which of the animals listed below belongs to Class Bivalvia? (choose all that apply)

• clams

• scallops

• squid

• mussels

What is meant by "brackish" water?

• The water has high DOM (dissolved organic matter)

• The water's salinity changes depending on the time of day/year.

• The water is highly polluted