A) Prismatic layer
B) Columnar epithelial cells of mantle
C) Ciliated epithelial cells of mantle
D) Connective tissue of mantle
Correct Answer: B
Solution :
Columnar epithelial cells of mantle secrete pearl. The pearl oysters produce pearl as an adaptation against outside, ie, foreign materials such as sand, grain or a parasite.You need to login to perform this action.
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