Which one of the following plant secondary metabolites is a natural insecticide?

Which one of the following plant secondary metabolites is a natural insecticide?

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

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