Question

rhabdostyla lives in freshwater habitats such as ponds lakes and rivers , freshwaters has avery low concentration of solutes , rhabdostyla has contractile vacuole that fills with water and emties at intervals as shown in the contractile vacuole removes excess water , explain using the term water potential why rhabdostyla needs to remove excess water

Answer 1

Answer:

A contractile vacuole is an organelle in single-celled organisms that helps the cell remove wastes and excess water. It is found primarily in freshwater protists and algae. They are necessary because, in fresh water, the concentration of solutes inside a cell is greater than that outside the cell, so the cell constantly absorbs water through osmosis. In Paramecia , a typical freshwater protist, the vacuole is encompassed by a few waterways, which ingest water by osmosis from the cytoplasm. After the trenches load with water, the water is pumped into the vacuole. At the point when the vacuole is full, it ousts the water through a pore in the cytoplasm which can be opened and shut. This pore has, in a few types of paramecium, vanished altogether when not being used, prompting the thought of a second cell in paramecium.

Explanation:

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