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Question

Which among the following organisms do not excrete ammonia?

A

Fish
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B

Octopus
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C

Starfish
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D

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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