Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2007

  • question_answer
    Ammonia is the chief excretory substance in

    A)  camel and whale 

    B)  cartilaginous fishes

    C)  whale and tortoise

    D)  fresh water fishes

    Correct Answer: D

    Solution :

    Ammonia is highly toxic and highly soluble in water. Its excretion as such, therefore, rquires a large amount of water. That is why most of the aquatic animals excrete ammonia. This type of excretion is called ammonotelic excretion, eg, bony and fresh water fishes etc.


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