Question

Assertion (A): Agrobacterium tumefaciens is a pathogen of several monocot plants.
Reason (R): It is able to deliver a piece of DNA known as ‘T-DNA’ to transform normal plant cells into a tumor.

• A. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

Remember: - Agrobacterium tumefaciens infects dicots. - T-DNA transfer is crucial in genetic engineering for plant transformation.

Answer 1

The Correct Option is D

- Agrobacterium tumefaciens is primarily a pathogen of dicot plants, not monocots. - However, it does deliver T-DNA into the host plant genome, causing the formation of crown gall tumors.