Question

Read the two statements A and B and identify the correct choice from the given options.
Statement A : Agrobacterium tumefaciens is the causative agent of crown gall disease of dicots.
Statement B : Agrobacterium tumefaciens cause infection by entering the plant through wounds and injuries.

• A. Statement A is correct and B is wrong
• B. Statement B is correct and A is wrong
• C. Both statements A and B are correct
• D. Both statements A and B are wrong

Answer 1

The correct option is C Both statements A and B are correct

Agrobacterium tumefaciens is a Gram-negative bacterium. It is rod shaped bacterium. It is the causative agent of crown gall disease of dicots. They have a T-plasmid which have the tumor causing genes. This gene causes formation of tumor when the plant is infected with the bacterium. The bacterium enters the plant when there is some wound or injury caused to the plant.

Thus, the correct answer is option C.