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NEET Previous Year Question

$The introduction of t-DNA into plants involves$

Topic: NEET PYQ

Answer: D. Full step-by-step solution below.

A $Altering the pH of soil, then heat-shocking the plants.$
B $Exposing the plants to cold for a brief period.$
C $Allowing the plant roots to stand in water.$
D $Infection of the plant by Agrobacterium tumefaciens.$

Correct answer: D

Solution

(d) Agrobacterium tumefaciens naturally transfers its T-DNA (Transfer DNA) from the Ti plasmid into plant cells, making it a useful vector in plant genetic engineering.

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