Q. Which one of the following is commonly used in transfer of foreign DNA into crop plants?
A) Meloidogyne incognita
B) Agrobacterium tumefaciens
C) Penicillium expansum
D) Trichoderma harzianum
Explanation
[Solution from source] Agrobacterium tumefaciens naturally transfers a piece of its Ti plasmid (T-DNA) into dicot plant cells, and the disarmed Ti plasmid is used as a vector to deliver genes into crop plants. Meloidogyne incognita is a nematode pest and Trichoderma is a biocontrol fungus, not a vector. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.