Question

write some characteristics of phylum mollusca?​

Answer 1

Answer:

Characteristic Features of Phylum Mollusca

They are bilaterally symmetrical.

They are triploblastic, which three layers.

They show organ system grade of organisation.

The body is soft and unsegmented.

Body is divisible into three regions – head, a visceral mass, and ventral foot.

Body is covered by a mantle and shell.

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Answer 2

They are the second largest phylum of kingdom animalia

They are mostly marine and few are fresh water dwellers

They have visceral mass covered in mantel

This mantel secretes a hard, calcareous shell

This shell can be internal or external or even absent in some cases..!

Animals belonging to this phylum are unisexual

E.g. octopus, bivalve, snail, etc