Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 11 PCB Single Correct MCQ
Published on: August 21, 2026

In tobacco plants, infection of I in its II has significantly reduced the yield. This infection can be prevented by a strategy based on III which is a method of cellular defense in all the IV organisms.
Identify the option that correctly indicates I, II, III and IV respectively.

I

II

III

IV

(a)

Agro-bacterium

stem

RNA interference

prokaryotic

(b)

Meloidegyne incognitia

stem

gene therapy

eukaryotic

(c)

Meloidegyne incognitia

roots

RNA interference

eukaryotic

(d)

Agro-bacterium

roots

gene therapy

prokaryotic

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Text Solution

Verified by Experts
The correct answer is:
C

• A nematode Meloidegyne incognitia infects the roots of tobacco plants and causes a great reduction in yield.

• A novel strategy was adopted to prevent this infestation which was based on the process of RNA interference (RNAi).

• RNAi takes place in all eukaryotic organisms as a method of cellular defense.

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