Question

Polycyclic diseases are characterized by __________.
(A) Air borne nature
(B) Foliar infection
(C) Multiplicity of infection
(D) Short generation time
Choose the correct answer from the options given below :

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A), (B), (C) and (D).
• D. (B), (C) and (D) only.

Hint:

Classic examples of polycyclic diseases include late blight of potato (Phytophthora infestans), wheat rusts (Puccinia spp.), and powdery mildews.
These diseases require continuous monitoring and protective fungicide applications because their short generation times allow them to spread exponentially.

Answer 1

The Correct Option is C