Which of the following combinations of plant diseases and the types of their causal organisms is/are CORRECT?
Which of the following combinations of plant diseases and the types of their causal organisms is/are CORRECT?
(A) Late blight of potato − Bacteria
(B) Black rot of crucifer − Bacteria
(C) Tungro disease of rice − Mycoplasma
(D) Root knot of tomato − Nematode
Answer
Answer: (B) Black rot of crucifer − Bacteria
(D) Root knot of tomato − Nematode
Explanation:
Black rot of crucifer is caused by bacteria, and root knot of tomato by nematodes. Late blight is caused by fungi, and tungro disease by a virus.