A) frog
B) rabbit
C) both [a] and [b]
D) neither in frog noir in rabbit
Correct Answer: A
Solution :
RBCs of all adult mammals are enucleated (non-nucleated) mostly concave and circular. Absence of nucleus in mammalian RBCs helps to accommodate maximum amount of haemogloblin by increase in surface area. Amphibian RBCs are the largest among vertebrates. It is nucleated, oval and biconvex. They have relatively less haemoglobin. Consumption of oxygen is relatively high due to the presence of cell organelles unlike mammalian RBCs.
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