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other molluscs have a radula which is lost in the bivalves, they also have a reduced head and nervous system. most are also lamellibranchs (filter feeders) which is why they have lost the radula (used for rasping plant life by herbivores such as the gastropods).
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Three main classes of mollusks?
bivalves gastropods cephalopods
Of the major classes of mollusks the one that contains sessile filter feeder is?
bivalves
What does a horse conch eat?
They eat bivalves and other snails.
What does the knobbed whelk eat?
Oysters, clams, and other bivalves.
What eat the knobbed whelk?
Oysters, clams, and other bivalves.
What is the scientific name for bivalves?
Bivalvia is the scientific name for the bivalves.
Are sea urchins sessile?
Yes. Classes of mollusks which include clams, oysters, and other bivalves are sessile filter feeders.
Compare the circulatory system of each of the three major classes of mollusks?
Not clear on which 3 classes are the "major ones", but Polyplacophorans, Gastropods, and Bivalves have an open circulatory system while Cephalopods have a closed circulatory system.
What type of mollusk does not have a radula?
The radula (or some form of the radula) is found in all classes of mollusks except bivalves (organisms with two shells such as clams).
Why are bivalves called bivalves?
It has two valves, hence bi....
What mollusk group are suspension feeders?
bivalves
What eats bivalves?
Humans and some sea animals eat bivalves. Bivalves are marine animals such as clams, scallops, oysters as well as mussels.
