Question

Osmoregulation occurs in Amoeba an Paramoecium through

• A. Food vacuole
• B. Mitochondria
• C. Nucleus
• D. Contractile vacuole

Answer 1

The correct option is D Contractile vacuole

Osmoregulation is the maintenance of constant osmotic pressure in the fluids of an organism by the control of water and salt concentration. In Amoeba and paramecium, the osmoregulation occurs through Contractile vacuole. The function of a contractile vacuole in protozoan is to expel out excess water via diffusion.

So, the correct answer is 'Contractile vacuole'.