from amino acids and primarily come in the form of alkaloids and cyanogens. 12 Carnivory was a natural transition from insectivory for medium and large tetrapods, requiring minimal adaptation. Resistance refers to the ability of a plant to reduce the amount of damage it receives from a herbivore. 28 Herbivore modification is when various adaptations to body or digestive systems of the herbivore allow them to overcome plant defenses. Bile is manufactured in the liver and stored in the gall bladder until such time as it is needed.
Seed dispersal by herbivores and pollination are two forms of mutualistic herbivory in which the herbivore receives a food resource and the plant is aided in reproduction. "Optimal foraging and community structure: The allometry of herbivore food selection and competition". Archived from the original (Free full text) on Retrieved Origin of dental occlusion in tetrapods: signal for terrestrial vertebrate evolution? 25 According to this theory, locus should move to a new patch of food when the patch they are currently feeding on requires more energy to obtain food than an average patch. "Diet and food preferences of white-tailed deer in north-eastern Stewart Island". This is an important consideration when we compare it later to the digestion of a herbivore.