Q. The kidneys resemble the contractile vacuoles of Amoeba in
Solution:
- In Amoeba the bubble-like contractile vacuole swells with excess fluid from the cytoplasm.
- Its membrane then pumps valuable ions back into the cytoplasm, leaving mainly water in the vacuole.
- Contractile proteins surrounding the vacuole then abruptly compress it, ejecting the water out of the cell through a pore in the cell membrane.
- This organelle resembles the kidney by expelling out excess water.
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