Given below are types of cells present in some animals. Which of the following cells can differentiate to perform different functions?
(a) Choanocytes 
(b) Interstitial cells 
(c) Gastrodermal cells
(d) Nematocytes
 
Ans. (b) Interstitial cells
Explanation: Other cells in the options cannot differentiate. But interstitial cells in testes and ovary can differentiate.