A Group of Plants Has Evolved a Secondary Metabolite That

Multiple Choice

A group of plants has evolved a secondary metabolite that deters insect herbivores, followed by adaptive radiation of those plants and subsequently an adaptive radiation of herbivores resistant to the anti-herbivory chemical.The insect-plant interaction is very specific.The best description of this scenario involves

A) chemical evolution.
B) reciprocal adaptation.
C) storage of plant toxins.
D) reduction of herbivory.
E) reduction of plant toxicity.