Q. Which of the following is correct about protonephridia / flame cells?

2169 188 Excretory Products and their Elimination Report Error

A

Protonephridia are the excretory structures in platyhelminthes (e.g Planaria), rotifers and some annelids

4%

B

Protonephridia are the excretory structures in the cephalochordates e.g. Amphioxus

3%

C

Protonephridia are primarily concerned with ionic and fluid volume regulation i.e. osmoregulation

4%

D

AII

89%

Solution:

Correct answer is (d) AII