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butalik [34]
3 years ago
11

Why fresh water protozoa bear contractile vacuole?

Biology
1 answer:
Lerok [7]3 years ago
4 0

Answer:

It lacks a wall thus use the contractile vacuole to collect and expel excess water from the cell.

Explanation:

  • The contractile vacuole regulates the quantity of water inside a cell through a process known as osmoregulation.Osmosis constantly drives water in the cell since it is enclosed by a semipermeable membrane that can not keep the water out thus it is needed to prevent rupturing of the cell due to excess water in the cell.
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Which statement is not true of endothermic animals?
ahrayia [7]

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An endothermic animal is one which is capable of maintaining its own body temperature. They do this through physiological mechanisms, which is what the last choice is saying - these involve things such as hormones, sweating, etc.

These endothermic animals are considered warm blooded. This is because they can make their own body heat. Humans and other mammals are endothermic. We generate our own heat - we don't rely on sunbathing or shade to cool down or heat up our <u>internal</u> body temperature.

Hope this helps!

6 0
3 years ago
All plant and animal groups existing together and the physical factors with which they interact compose a(n)
Savatey [412]
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3 years ago
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Katyanochek1 [597]

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5 0
3 years ago
If a new study shows a connection between eating avocados and a lowered risk of disease, what do you think will happen?
salantis [7]

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