During hibernation frog performs

Options

A. Pulmonary respiration
B. Cutaneous respiration only
C. Bucco-pharyngeal respiration
D. Both cutaneous and pulmonary respiration

Answer

**Step-by-Step Solution:**

1. **Understanding Hibernation in Frogs:**
- Hibernation is a state of inactivity and metabolic depression in animals during winter. Frogs enter this state to survive cold temperatures when food is scarce.

2. **Identifying the Types of Respiration:**
- Frogs can perform different types of respiration, including:
- **Pulmonary Respiration:** Breathing through lungs.
- **Cutaneous Respiration:** Breathing through the skin.
- **Bacopharyngeal Respiration:** Breathing through the mouth and pharynx.

3. **Evaluating the Options:**
- **Option 1: Pulmonary Respiration:** This is incorrect because during hibernation, frogs do not rely on their lungs for gas exchange.
- **Option 2: Cutaneous Respiration Only:** This is correct. Frogs have moist skin that allows for gas exchange directly through the skin, which is essential during hibernation when their metabolic rate is low.
- **Option 3: Bacopharyngeal Respiration:** This is also incorrect as it is not the primary method of respiration during hibernation.
- **Option 4: Both Cutaneous and Pulmonary Respiration:** This is incorrect because, during hibernation, frogs primarily rely on cutaneous respiration.

4. **Conclusion:**
- The correct answer is **Option 2: Cutaneous Respiration Only** as frogs rely on their skin for gas exchange during hibernation.