Red rust of tea is caused by

Options

A. Cephaleuros virescence
B. Puccinia graminis
C. Harveyella
D. Chlamydomonas gametes

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the causative agent of the red rust disease in tea plants. This disease is a significant concern for tea cultivation.

2. **Analyzing the Options**: The options provided are:
- A) Cephalodors viracens
- B) Paxinia graminis
- C) Hervella
- D) Chlamydomonas gametes

3. **Evaluating Each Option**:
- **Option A: Cephalodors viracens**: This is identified as the causative agent of red rust in tea. It is an algal pathogen that affects tea plants.
- **Option B: Paxinia graminis**: This is known to cause leaf rust in wheat, not tea. Therefore, it is not the correct answer.
- **Option C: Hervella**: This is a parasitic red algae but does not specifically cause red rust in tea. It is not the correct answer.
- **Option D: Chlamydomonas gametes**: Chlamydomonas is a genus of green algae and does not cause red rust in tea. Thus, it is also incorrect.

4. **Conclusion**: After evaluating all options, the correct answer is **Option A: Cephalodors viracens**, as it is the known cause of red rust disease in tea.

**Final Answer**: Red rust of tea is caused by **Cephalodors viracens**.

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