Which of the following is plant viral disease?

Options

A. Tristeza (root rot) of Citrus
B. Banana bunchy top
C. Yellow vein mosaic of Bhindi
D. All of the above

Answer

To determine which of the following options represents a plant viral disease, we will analyze each option provided:

1. **Option A: Tristeza of citrus or root rot of citrus**
- Tristeza is indeed a viral disease caused by the Citrus tristeza virus. However, root rot is typically associated with fungal infections rather than viral diseases. Therefore, this option contains a viral disease (Tristeza) but also includes a non-viral condition (root rot).

2. **Option B: Banana bunchy top**
- Banana bunchy top is a viral disease caused by the Banana bunchy top virus, which is a single-stranded DNA virus. This is a confirmed plant viral disease.

3. **Option C: Yellow bean mosaic of bindi**
- Yellow bean mosaic of bindi is also a viral disease, caused by the Bindi yellow vein mosaic virus. This confirms that it is a plant viral disease as well.

4. **Option D: All of the above**
- Since options A, B, and C include at least one viral disease each, and since both Banana bunchy top and Yellow bean mosaic of bindi are confirmed viral diseases, we can conclude that all options listed contain viral diseases.

Based on the analysis of each option, the correct answer is:
**Option D: All of the above.**

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