what is phylum mollusca

Dear Student

Molluscan are very diverse animals and form an important part of the ecosystem in the world. Some animals that you are familiar with like snails, octopuses, squids, oysters, clams etc. all belong to Phylum Mollusca.

Some Characteristics of Phylum Mollusca are

1. They are bilaterally symmetrical.
2. They are triploblastic, which three layers.
3. They show organ system grade of organisation.
4. The body is soft and unsegmented.
5. Body is divisible into three regions – head, a visceral mass, and ventral foot.
6. Body is covered by a mantle and shell.

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