0 votes 0 votes Which one of the following plant secondary metabolites is a natural insecticide? Digitoxin Pyrethrin Salicylic acid Avenacin A-$1$ Plant, Animal and Microbial Biotechnology gate2018 plant animal biotechnology + – gatecse asked Feb 20, 2018 • edited Dec 15, 2020 by go_editor gatecse 1.4k points answer comment Share Follow See all 0 reply Please log in or register to add a comment.