The major nitrogenous waste $(S)$ in the respective animals is/are:

  • A
    Urea and uric acid in cow,frog and lion
  • B
    Uric acid in parrot,cockroach and garden lizard
  • C
    Ammonia in elephant,sea horse and turtle
  • D
    Urea in scorpion,earthworm and shark

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Assertion : Main constituent of human urine is ammonia.
Reason : If human urine is allowed to stand for some time,it smells strongly of ammonia.

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The yellow color of urine in vertebrates is due to the presence of:

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Marine teleosts,undergoing putrefaction,emit a sharp characteristic foul odour,which is due to the production of:

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