A) A-Respiratory organ, B-Buccal cavity, C-Skin, D-Lungs
B) A-Digestive organ, B-Pharynx, C-Mouth, D-Heart
C) A-Purifier, B-Heart, C-Lungs, D-Blood
D) A-Excretory organ, B-Skin, C-Pharynx, D-lungs
Explanation
The skin of the frog acts as respiratory organ in water and on land, the buccal cavity, the skin and the lungs acts as respiratory organs