| I. | In frog, cutaneous and pulmonary respiration are found |
| II. | A pair of elongated pink hollow lungs are found in thorax |
| III. | Atmospheric O2 → Nostril → Buccal cavity → Lungs |
| IV. | During aestivation and hibernation, gaseous exchange take place through skin. |
| A | B | C | D | E | |
| 1. | Gall bladder | Lung | Ovary | Testis | Rectum |
| 2. | Gall bladder | Lung | Fat bodies | Testis | Rectum |
| 3. | Gall bladder | Lung | Testis | Kidney | Rectum |
| 4. | Gall bladder | Lung | Fat bodies | Kidney | Rectum |