How do you differentiate a frog from a toad? (A) Frog has no exoskeleton but toad has scales. (B...

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How do you differentiate a frog from a toad?
(A) Frog has no exoskeleton but toad has scales.
(B) Frog respires through lungs but toad respires through skin.
(C) Frog has a tail but toad has no tail.
(D) Frog has no parotid glands but toad has a pair of parotid glands.
(2011)
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