Select the mode of respiration in frog during hibernation

Options

A. Lungs
B. Buccopharyngeal cavity
C. Moist skin only
D. External gills

Answer

**Step-by-Step Solution:**

1. **Understanding Hibernation in Frogs:**
- Frogs enter a state of hibernation during extreme cold conditions, where their metabolic activities slow down significantly to conserve energy.

2. **Identifying Modes of Respiration:**
- Frogs can respire through various means: lungs, buccopharyngeal cavity, moist skin, or external gills.
- During hibernation, their activity level is low, and they require less oxygen.

3. **Determining the Primary Mode of Respiration During Hibernation:**
- The primary mode of respiration for frogs during hibernation is cutaneous respiration, which means they respire through their skin.
- Their skin remains moist, allowing for the exchange of respiratory gases.

4. **Explaining Cutaneous Respiration:**
- Cutaneous respiration occurs through the permeable skin of frogs, which allows oxygen to diffuse into the body and carbon dioxide to diffuse out.
- This method is effective in low-activity states like hibernation because it requires less energy than active respiration through lungs.

5. **Conclusion:**
- Therefore, the mode of respiration in frogs during hibernation is through their moist skin.

**Final Answer:**
- The mode of respiration in frogs during hibernation is through moist skin (cutaneous respiration).

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