Many mammals have skins and mucous membranes that are sensitive to phenolic secretions of plants like poison oak (Rhus). These secondary compounds are primarily adaptations that ________.

Question

Quizplus · Accepted Answer

Phenolic secretions of plants like poison oak are chemical toxins that serve as a defense mechanism against herbivores. Mammals that have sensitive skins and mucous membranes are likely to avoid such plants, which reduces selective pressure on the plant to produce more defensive chemicals. Therefore, the primary function of these compounds is to inhibit herbivory.

Many Mammals Have Skins and Mucous Membranes That Are Sensitive