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The following substances are the excretory products in animals. Choose the least toxic from among them.

(a) Urea (b) Uric acid (c) Ammonia (d) Carbon dioxide

Answers (1)

The answer is the option (b) Uric acid

Explanation: The level of toxicity can be shown as below with ammonia being the
most toxic.

Ammonia;

Urea;

Uric acid

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