Question

Needle nematodes are important vectors of:
(A) Raspberry ringspot virus
(B) Tomato black ring virus
(C) Arabis mosaic
(D) Broomgrass mosaic
Choose the correct answer:

• (A) and (D) only
• (B) and (D) only
• (A) and (C) only
• (A) and (B) only

Hint:

Needle nematodes = virus vectors in soil; especially Raspberry and Arabis mosaic.

Answer 1

The Correct Option is C

Needle nematodes, especially from the Longidoridae family, act as vectors for plant viruses such as:
Raspberry ringspot virus
Arabis mosaic virus

Answer 2

Tomato black ring virus (B) and Broomgrass mosaic (D) are not part of the classic set of nepoviruses transmitted by needle (Longidorus) nematodes referenced in standard vector lists, so any option containing B or D can be set aside. That rules out the option combinations that include B or D. What remains is the pairing of Raspberry ringspot virus and Arabis mosaic virus, both well-documented as being spread by needle nematodes. Hence, (A) and (C) only.