Q. Which one of the following plant secondary metabolites is a natural insecticide?
(A) Digitoxin
(B) Pyrethrin
(C) Salicylic acid
(D) Avenacin A-1
Ans: Pyrethrin
Q. Which one of the following plant secondary metabolites is a natural insecticide?
(A) Digitoxin
(B) Pyrethrin
(C) Salicylic acid
(D) Avenacin A-1
Ans: Pyrethrin