A) Felis dumestica
B) Rana tigrina
C) Corvus corvus
D) Labeo rohita
Correct Answer: C
Solution :
In birds, venal portal system is much reduced. Corvus is commonly called crow. In it. renal portal system is also reduced. In this, the renal portal vein does not break into capillaries in kidneys but sends off only a small branches.
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