A) Excretory products are not found
B) Hypertonic condition of internal and external medium
C) Isotonic condition of internal and external medium
D) Excretion is absent
Correct Answer: C
Solution :
Contractile vacuole is an osmoregulatory organelle. When the internal and external media are isotonic, there is no necessity of contractile vacuole.You need to login to perform this action.
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