Frogs differ from humans in possessing- | vedclass

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(D) Frogs and humans share several anatomical features,such as the presence of a thyroid gland,parathyroid glands,paired cerebral hemispheres,and a he

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Nucleated red blood cells

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(D) Frogs and humans share several anatomical features,such as the presence of a thyroid gland,parathyroid glands,paired cerebral hemispheres,and a hepatic portal system. However,a key difference lies in the nature of their red blood cells $(RBCs)$. In humans,mature red blood cells are enucleated (lacking a nucleus) to maximize space for hemoglobin. In contrast,frogs possess nucleated red blood cells throughout their life cycle. Therefore,the correct option is $D$.

$P$. Frog on land	$I$. Cutaneous respiration
$Q$. Frog in water	$II$. Pulmonary respiration
$R$. Frog during aestivation and hibernation	$III$. Buccopharyngeal respiration

Frogs differ from humans in possessing$-$

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