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The Gastropods have a stomach-footed. They move by muscle contractions. | The Gastropods have a stomach-footed. They move by muscle contractions. | ||
They can have a shell like the snails. | They can have a shell like the snails. | ||
Their body is separated in three parts. First | |||
===The Cephalopods=== | ===The Cephalopods=== | ||
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===The Bivalves=== | ===The Bivalves=== | ||
= What are the main features of animals? = | = What are the main features of animals? = | ||
Version du 6 décembre 2010 à 12:25
What are molluscs?
They are animals with a bilateral symmetry and an exoskeleton called a shell. There are three different groups of molluscs; the Gastropods, the Cephalopods and the Bivalves.
What are the main features of each group?
The Gastropods
The Gastropods include the snails and the slugs. Some of them live into the water. These molluscs can be unisexual or hermaphrodite. The Gastropods have a stomach-footed. They move by muscle contractions. They can have a shell like the snails. Their body is separated in three parts. First
The Cephalopods
tantaculas, swim by jet projection energy-consuming mode of locomotion