Which of the following are true about Mollusca?

Triploblastic and radial symmetry

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Bilateral symmetry and calcareous shell

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Radula and diploblastic

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Calcareous shell and radial symmetry

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Solution

The correct option is B Bilateral symmetry and calcareous shell
Mollusca are the second largest animal phylum. They are bilaterally symmetrical, triploblastic, coelomate animals. They have a calcareous shell. Radula are specialised structure in mollusca for feeding.
Therefore bilateral symmetry and calcareous shell is the right answer.

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