Question

Match List I with List II
List I:
A. Banana bunchy top virus
B. Mung bean yellow mosaic virus
C. Banana streak virus
D. Cherry mottle leaf virus
List II:
I. Whitefly
II. Mealybug
III. Aphid
IV. Mite
Choose the correct answer from the options given below:

• A. A-I, B-III, C-IV, D-II
• B. A-I, B-IV, C-III, D-II
• C. A-II, B-I, C-IV, D-III
• D. A-III, B-I, C-II, D-IV

Hint:

Remember these key vectors: Banana bunchy top is transmitted by aphids, Mung bean yellow mosaic by whiteflies, and Banana streak by mealybugs.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Plant viruses require specific arthropod vectors, such as aphids, whiteflies, mealybugs, and mites, to transmit infections between host plants.
These vector relationships are highly specific.

Step 2: Detailed Explanation:
Let us match each plant virus with its diagnostic vector species:
1. Banana bunchy top virus (A): This single-stranded DNA virus causes severe stunting in bananas.
It is transmitted in a persistent, circulative manner by the banana aphid, Pentalonia nigronervosa, which is an aphid (III).
Therefore, A matches with III.
2. Mung bean yellow mosaic virus (B): This geminivirus causes yellow mosaic symptoms in legumes.
It is transmitted by the silverleaf whitefly, Bemisia tabaci, which is a whitefly (I).
Therefore, B matches with I.
3. Banana streak virus (C): This badnavirus causes chlorotic streaking on banana leaves.
It is transmitted by citrus mealybugs, Planococcus citri, which are mealybugs (II).
Therefore, C matches with II.
4. Cherry mottle leaf virus (D): This virus is transmitted by the microscopic eriophyid mite, Eriophyes pruni, which is a mite (IV).
Therefore, D matches with IV.

Step 3: Final Answer:
Combining these vector relationships yields the sequence: A-III, B-I, C-II, D-IV.