Question

What is a contractile Vacoule?

Answer 1

Answer:

Contractile vacuoles are membrane-bound organelles that exist mainly in the cells of the kingdom Protista. The point of the contractile vacuole is to pump water out of the cell through a process called osmoregulation, the regulation of osmotic pressure. It occurs in freshwater protists, but mainly in the kingdom Protista as a whole. They can be classified into two versions per unicellular organism, the anterior contractile vacuole (which is found on the anterior end) and the posterior contractile vacuole which is found on the posterior end.

Explanation:

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Answer 2

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Contractile vacuole, regulatory organelle, usually spherical, found in freshwater protozoa and lower metazoans, such as sponges and hydras, that collects excess fluid from the protoplasm and periodically empties it into the surrounding medium. It may also excrete nitrogenous wastes.