In the "arms race" between plants and herbivores, herbivores (insects) can overcome the toxic effects of plant specialized metabolites through natural selection. Which of the following would be an adaptation that would promote insect herbivory?
Plants express a novel gene that encodes for an inhibitor of larval development.
Insects express a gene coding for a new enzyme that degrades the plant toxin.
Plants develop a mutation that promotes the development of hairs and spines.
Insects evolve new taste receptors that trigger an avoidance reaction to the toxin.