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Question

Almost all the aquatic excrete ammonia as the nitrogenous waste product. Which of the following statements is not in agreement with this situation ?

A
Ammonia is easily soluble in water.
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B
Ammonia is highly toxic and needs to be eliminated when formed.
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C
Both (a) and (b)
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D
None of these
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Solution

The correct option is D None of these
Aquatic animals excrete nitrogenous waste as ammonia. Ammonia (NH3) is a gas which is easily soluble in water as both are polar molecule. It is highly toxic to the animal. So its concentration must be kept very low in the blood. For this reason, ammonia should be eliminated as rapidly from the body as it is formed.
So, the correct answer is (D).

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