Question

The glandular fold enclosing the visceral mass of most of molluscs, secreting shell is called as

• A. Atrium
• B. Peritoneum
• C. Mantle
• D. None of the above

Answer 1

The correct option is C Mantle

Molluscs are soft bodied organisms with hard skeleton. the skeleton is made up of hard calcareous shell like structure. The mantle is an important part in the body of molluscs. It forms the dorsal body wall. The mantle covers the organs of digestion, reproduction and movement.The mantle leads to formation of a mantle cavity. This cavity is formed by the mantle skirt. The mantle skirt is the result of the double fold of mantle, which encloses a water space. This is the space which contains the visceral mass. This space contains the gills, anus and organs for taste, excretion and reproduction organs. This is the space which contains the tissues which secretes the shell.

Thus, the correct answer is option C.