Question

Cotton leaf curl viral disease is transmitted by

• A. Cotton aphid
• B. Whitefly
• C. Thrips
• D. Mite

Hint:

Whitefly-transmitted viruses:
- Cotton leaf curl virus.
- Tomato leaf curl virus.
- Yellow vein mosaic virus of okra.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
This question tests knowledge of vectors of plant viral diseases.

Step 2: Detailed Explanation:
Cotton leaf curl virus (CLCuV) is transmitted by the whitefly (Bemisia tabaci).
It is a begomovirus (Geminiviridae).
The whitefly is the vector for many plant viruses.
Cotton aphid (A): Transmits some viruses but not cotton leaf curl.
Thrips (C): Transmit Tospoviruses.
Mite (D): Transmit certain viruses.
Thus, whitefly is the vector.

Step 3: Final Answer:
Thus, cotton leaf curl viral disease is transmitted by whitefly, which corresponds to option (B).
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