Question

Single-celled organisms with cell wall do not have contractile vacuoles. Suggest why?

Answer 1

Answer:

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Contractile vacuoles are membrane-bound organelles that pump water out of the cell. ... They are mainly found in protists or other species that are single-celled and lacking a cell wall, and they protect the cell against taking in too much water and rupturing.

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Answer 2

Explanation:

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Regards the posterior of the cell is a star-like structure, the contractile vacuole. This organelle helps the cell remove excess water, and without it, the euglena could take in some much water due to osmosis that the cell would explode.

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