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In the rabbit, the kidneys remove nitrogenous waste from blood and excrete it mainly in the form of:
AUric acid
BUrea
CAmmonia
DCreatine
Answer & Solution
Correct answer: B. Urea
1. Each rabbit kidney is built of many nephrons.
2. The nephrons separate nitrogenous wastes from the blood.
3. These wastes leave the body mainly as urea.
4. So urea is the correct excretory product.
5. Option A uric acid is the main waste of birds and reptiles, the trap.
6. Option C ammonia is highly toxic and excreted by aquatic animals, so it is wrong.
7. Option D creatine is a muscle compound, not the chief nitrogenous waste.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 13 Structural Organisation of Animals "Excretory system", p.203_
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