Consider the following statements about frog respiration:
I: Adult frog respires through lungs, skin and buccopharyngeal cavity.
II: Cutaneous respiration is more effective during hibernation.
III: Tadpoles respire only through lungs.
Which of the statements given above are correct?
1. I and II only
2. II and III only
3. I and III only
4. I, II and III
Subtopic:  Frogs | Frogs: Anatomy (Respiratory System) |
 83%
Level 1: 80%+
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