NEET Solved Paper 2017 Question 16

Question: In case of poriferans the spongocoel is lined with flagellated cells called :

Options:

A) Mesenchymal cells

B) Ostia

C) Oscula

D) Choanocytes

Show Answer

Answer:

Correct Answer: D

Solution:

  • Choanocytes (collar cells) form lining of spongocoel in poriferans (sponges). Flagella in collar cells provide circulation to water in water canal system.