In vertebrates,what is the significance of the renal portal system?

  • A
    For the removal of excess fat by the kidneys
  • B
    For the removal of nitrogenous waste by the kidneys
  • C
    To provide nutrition to the kidneys
  • D
    For the circulation of blood in the kidneys

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Similar Questions

Match the excretory organs listed under column $I$ with the animals given under column $II$. Choose the answer which gives the correct combination of alphabets of the two columns.
Column $I$ (Excretory organs)Column $II$ (Animals)
$A$. Nephridia$p$. Hydra
$B$. Malpighian tubules$q$. Leech
$C$. Protonephridia$r$. Shark
$D$. Kidneys$s$. Round worms,$t$. Cockroach

Coxal glands are the excretory organs of .........

Name the excretory organ of a prawn.

Discuss the evolution of excretory organs in various animal groups and mention their functions.

The excretory organ of crustaceans is:

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