Question

Pinacocytes are

• A. Ectodermal
• B. Mesodermal
• C. Endodermal
• D. Interstitial cells

Answer 1

The correct option is A Ectodermal

A. Ectodermal cells are the cells that form the ectoderm, the outer layer of body wall.

B. Mesodermal cells are the cells that form the mesoderm, the middle layer of body wall.

C. Endodermal cells are the cells that form the endoderm, the inner layer of body wall.

D. The interstitial cells are undifferentiated mesenchyme cells with the capability to convert in any type of epithelial cells.

Since pinacocytes are the flattened cells that form the outer layer or dermal epidermis of body wall of sponges, they are ectodermal cells.

So, the correct answer is 'Ectodermal'.