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Biological Classification — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBiological Classification2 Marks
Question
How do some protozoans maintain osmotic pressure?
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Answer

Protozoans take in water in bulk. As they mostly live in aquatic environments. They are highly likely to burst due to excessive intake of water. Therefore, protozoans need to osmoregulate continuously to keep only the required amount of water in their cells. They get rid of excess water through contractile vacuoles.

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