Covered smut of Sorghum is caused by

Options

A. Sphaelotheca cruenta
B. Sphaelotheca reiliana
C. Sphaelotheca sorghi
D. Tolyposorium ehrenbergii

Answer

To determine the cause of covered smut of Sorghum, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Disease**: The question asks about the covered smut of Sorghum, which is a disease affecting the Sorghum plant.

2. **Understand the Organism**: The disease is caused by a specific type of fungus. In this case, we need to identify which fungus is responsible for this disease.

3. **Review the Options**: The options provided are:
- 1) Phallothica cruenta
- 2) Phallothica realiana
- 3) Phallothica sorghii
- 4) Tolypocladium erinbergii

4. **Research the Correct Fungus**: Based on biological knowledge, covered smut of Sorghum is known to be caused by the fungus **Sporisorium sorghi**, which is also referred to as **Spacilothica sorghii**.

5. **Evaluate the Options**:
- Option 1 (Phallothica cruenta) is incorrect.
- Option 2 (Phallothica realiana) is incorrect.
- Option 3 (Phallothica sorghii) is the correct option, as it corresponds to the known causative agent of the disease.
- Option 4 (Tolypocladium erinbergii) is incorrect.

6. **Conclude the Answer**: The correct answer to the question "Covered smut of Sorghum is caused by" is **Option 3: Phallothica sorghii**.

### Final Answer:
**Covered smut of Sorghum is caused by Phallothica sorghii.**

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