A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage, for the main component of its diet. As a result of their plant diet, herbivorous animals typically have mouthparts adapted to rasping or grinding.
Peripeteia is the reversal from one state of affairs to its opposite. Some element in the plot effects a reversal, so that the hero who thought he was in good shape suddenly finds that all is lost, or vice versa. Anagnorisis is a change from ignorance to knowledge.
The nephridium (plural nephridia) is an invertebrate organ which occurs in pairs and performs a function similar to the vertebrate kidney.Nephridia remove metabolic wastes from an animal's body. protonephridium (proto = first) is a network of dead-end tubules lacking internal openings found in the phyla Platyhelminthes, Nemertea and Rotifera. The ends are called flame cells (if ciliated) or solenocytes (if flagellated); they function in osmoregulation and ionoregulation, respectively.