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Question: Answered & Verified by Expert
Which one of the following options gives the correct categorisation of six animals according to the type of nitrogenous wastes (A, B, C), they give out?

BiologyExcretory Products and their EliminationNEETNEET 2012 (Mains)
Options:
  • A (a)
  • B (b)
  • C (c)
  • D (d)
Solution:
1705 Upvotes Verified Answer
The correct answer is: (c)
On the basis of nitrogenous metabolic waste the animals are of four types :
(i) Ammonotelic Excreted ammonia, e.g., aquatic animals, bony fishes, frog, toad and crocodile, etc.
(ii) Aminotelic Excreted amino acid, e.g., Mollusca and echinoderms.
(iii) Ureotelic Excreted urea, e.g., frog, toad and mammals.
(iv) Uricotelic Excreted uric acid, e.g., insects, land reptiles and birds.

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