Choose the organisms which excrete urea among the following.

Frogs

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Humans

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Insects

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Amoeba

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Solution

The correct options are
A
Frogs

B
Humans

When ammonia combines with carbon dioxide and water, it forms urea. Urea is comparatively less toxic and it dissolves in water easily. Humans and frogs excrete urea whereas insects and amoeba excrete uric acid and ammonia respectively.

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