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Whose secretion forms the pearl...

Whose secretion forms the pearl

A

Prismatic layer

B

Columnar epithelial cells of mantle

C

Ciliated epithelial cells of mantle

D

The connective tissue of mantle

Text Solution

Verified by Experts

The correct Answer is:
B
The pearl oysters produce pearl as an adaptation against outside materials. When a foreign material such as sand, grain or a parasite happened to enter the body it adheres with the mantle. The mantle epithelium at once grows over the material in the form of a sac and encloses it. This mantle epithelium is columnar epithelial cells secreting concentric layers around the foreign material and this completed structure is called pearl.
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