In which of these animals, skin serves as an accessory organ of respiration

Options

(a) Bird
(b) Frog
(c) Lizard
(d) Rabbit

Correct Answer:

Frog

Explanation:

In frog, the skin serves as an accessory organ of respiration because the skin of frog is thin and richly supplied with blood capillaries. It is kept moist by mucus and water.