- A It fixes atmospheric nitrogen gas directly within specialized root nodule structures
- B Its Ti plasmid naturally transfers T-DNA into plant genome (used to insert transgenes)
- C It produces plant growth hormones that specifically stimulate rapid shoot elongation
- D It confers natural drought resistance to any host plant it successfully infects
Correct answer: B. Its Ti plasmid naturally transfers T-DNA into plant genome (used to insert transgenes)
Explanation: Agrobacterium Ti (tumor-inducing) plasmid transfers T-DNA into plant cells. Scientists replace pathogenic T-DNA with desired transgenes.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
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