Marine protozoans lack contractile vacuole because [DPMT 2001] – McqOptions

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1.	Marine protozoans lack contractile vacuole because [DPMT 2001]
A.	Their body cannot accommodate it
B.	They are hypo osmotic to their environment
C.	They are isotonic with their environment
D.	Osmoregulation is done by cell membrane
Answer» C. They are isotonic with their environment

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