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What is the main function of contractile...

What is the main function of contractile vacuoles in protozoans ?

A

remove surplus water

B

secrete proteins

C

regulate the pH of the internal milieu

D

digest food materials.

Text Solution

Verified by Experts

The correct Answer is:
A
A contractile vacuole is found in fresh - water protozoa, it periodically expels water to the outside. In this manner excess water leaves the cell. Due to its osmotic relationship with its environment, water is entering and the cell must maintain the water level of its protoplasm .
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