Q. The tumour inducing capacity of $Agrobacterium\ tumefaciens$ is located in large extrachromosomal plasmids called
A) Ri-plasmid
B) Lambda phage
C) pBR322
D) Ti-plasmid
Explanation
Ti-plasmid is found in Agrobacterium tumefaciens, which produces crown gall (tomour) in a large number of dicot species. A. tumefaciens is a Gram negative soil bacterium that infects a wide range of plants and causes crown galls
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.