Which is the ''perfect stage'' of the fungus?

Options

A. When it reproduces sexually
B. When it reproduces asexually.
C. When it form perfect resting spores.
D. When the fungus is perfectly healthy

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Perfect Stage in Fungi:**
- The "perfect stage" of a fungus refers to the phase in its life cycle where sexual reproduction occurs, leading to the formation of sexual spores.

2. **Identify the Options Given:**
- Option A: When it reproduces sexually
- Option B: When it reproduces asexually
- Option C: When it forms perfect resting spores
- Option D: When the fungus is perfectly healthy

3. **Analyze Each Option:**
- **Option A:** This option indicates sexual reproduction, which is associated with the formation of sexual spores. This aligns with the definition of the perfect stage.
- **Option B:** Asexual reproduction does not lead to the formation of sexual spores, so this is not the perfect stage.
- **Option C:** While resting spores can be formed, they are not necessarily indicative of the perfect stage, which specifically involves sexual reproduction.
- **Option D:** The health of the fungus does not determine the perfect stage; it is more about the reproductive phase.

4. **Conclusion:**
- Based on the analysis, the correct answer is **Option A: When it reproduces sexually**. This is the stage where sexual spores are formed, which defines the perfect stage of fungi.