Question

The middle layer in body wall of porifera:

• A. Mesoderm
• B. Pinacoderm
• C. Mesoglea
• D. Mesentery

Answer 1

Answer: (C)

Mesoglea

A. Mesoderm is the middle germ layer out of three primary germ layers in the body of an organism,

B. The body wall of the sponge consists of two layers, outer layer pinacoderm, and inner layer choanoderm.

C. Mesoglea, also known as the mesophyll layer, is present in between the outer and inner layers of the body wall of sponges. It is a noncellular and gelatinous connective tissue layer.

D. Mesentery is the folds of tissue by which organs are attached to the body wall.

So, the correct answer is 'Mesoglea'.