Multiple choice

The causative bacterial agent(s) of Pierce's disease in grapes is /are P. Xylella fastidiosa Q. Xylophilus ampelinus R. Agrobacterium tumefaciens

  1. Only P

  2. Only Q

  3. Only R

  4. P and Q

  5. Q and R

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In grapes, the Pierce's disease is caused by the bacterial agent Xylella fastidiosa. Happy disease is caused by Xylophilus ampelinus in grapes. Agrobacterium tumefaciens causes crown gall disease in grapes. Hence, only P causes Pierce’s disease in grapes.