Question

A soft and spongy layer of skin over visceral hump of Pila forms ….(a) Radula
(b) Mantle(c) Ctenidium
(d) Tentacle

Answer 1

A soft and spongy layer of skin over visceral hump of skin of pila forms Mantle. mantle is the dorsal body wall which protects the digestion,reproduction and locomotion organs.

Answer 2

A soft and spongy layer of skin over visceral hump of Pila forms Mantle.

Explanation:

• The digestive, reproductive, and locomotor organs are protected by the mantle, which is the dorsal body wall.
• The mantle is an important aspect of mollusk anatomy: it is the dorsal body wall that covers the visceral mass and protrudes in the form of flaps well beyond the visceral mass.
• The mantle epidermis secretes calcium carbonate and conchiolin, which forms a shell in many mollusk species. In sea slugs, the shell gradually wears away, and the mantle becomes the animal's dorsal surface.