Question

Pearl oyster belongs to the phylum:

• A. Annelida
• B. Echinodermata
• C. Athropoda
• D. Mollusca

Answer 1

The correct option is D Mollusca

Pearl oyster belongs to phylum Mollusca as their valves are calcified and they exchange gases through their mantles. These oysters have a strong inner shell layer composed of nacre, also known as "mother of pearl". They draw water in over their gills through the beating of cilia and also exhibit excretory functions.

So, the correct answer is option D.