Birds and bats have homologous limbs because they are both ultimately derived from terrestrial tetrapods, but their flight mechanisms are only analogous, so their wings are examples of functional convergence.

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Vacuoles are structures found in many cells. Their job is to store materials needed for the cell. Paramecia and other unicellula

Nataly [62]

Contractile means the ability of an organism to withhold, reduce in size or shrink.

A contractile vacuole will help this organism better survive in its moist environment by preventing or stopping the cell from absorbing too much water from its moist environment.

A contractile vacuole is an organelle that can be found in organisms that are said to be single-celled (Unicellular organisms).

One of the primary functions of a contractile vacuole is to absorb excess water from the protoplasm in the unicellular organism and release this water to the surrounding environment.

A contractile vacuole can be called the excretory organ of unicellular organisms. This is because it is involved in osmoregulation.

A contractile vacuole will help this organism better survive in its moist environment by preventing or stopping the cell from absorbing too much water from its moist environment.

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