Question

Which of the following 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 no parotid glands but toad has a pair of them.
• D. Frog has a tail but toad has no tail.

Answer 1

The correct option is C Frog has no parotid glands but toad has a pair of them.

A. Frog and toad both belong to subclass Anura so they are without scales.

B. Frog skin is respiratory and toad skin is non- respiratory.

C. Frog has no parotid glands but toad has two parotid glands behind the tympana.

D. Both have no tail.

So, the correct answer is 'C'.