Question

Choanocyte$/$collar cell is charateristic of

• A. Annelida
• B. Arthropoda
• C. Porifera
• D. None of the above

Answer 1

The correct option is C Porifera

Choanocytes, also called collar cells are the specialised flagellated cells that form the gastral epidermis of the inner layer of the body wall in sponges. These cells help in nutrition, circulation, respiration and excretion.These cells are the characteristic feature of sponges i.e. phylum Porifera.

So, the correct answer is 'Porifera'.