Q. Consider the following statements about respiratory system of frog I. Skin acts as a respiratory organ in water as well as on land II. Dissolved oxygen is exchanged through the skin by the process of diffusion in water III. Lungs are paired and present in thorax IV. Gaseous exchange takes place through the skin during hibernation and aestivation Which of the statements given above is are incorrect?
A) Only I
B) I and II
C) I, II and III
D) II and IV
Explanation
Frog respire on land and in water by the two different methods. In water, skin acts as aquatic respiratory organs. On land, inspite of skin, the buccal cavity and lungs acts as respiratory organs. Pulmonary respiration occurs on land through lungs
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.