Which among the following organisms do not excrete ammonia?

Fish

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Octopus

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Starfish

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Sparrow

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Solution

The correct option is D
Sparrow

Aquatic organisms like fishes, octopus, starfish are surrounded by water.

They excrete ammonia as ammonia is soluble in water and there is an easy availability of water to them.

As sparrow is a bird and does not have easy availability of water, it excretes uric acid which does not have a lot of water content in it.

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