Unformatted text preview: Symbiosis In a symbiosis , two different kinds of organisms live together in an intimate and more or less permanent relationship. Lichens are the classic example of a symbiosis between a fungus and a cyanobacterium or an alga. Mycorrhizae , too, are examples of fungi and the root cells of vascular plants in a symbiosis. If the interactions between the symbionts are of mutual benefit, the symbiosis is termed a mutualism ; if one partner benefits and the relationship is of no significance to the other, it is a commensalism ; parasitism is a symbiosis in which one partner benefits and the other is harmed. Mutualism . Seed plants have developed all manner of mutualisms, the most highly developed being the interactions between insects, birds, bats, and a few other animals that ensure pollination of flowers, especially by cross-fertilization. Pollinators are attracted to the flowers by colors, scents, and flowers, especially by cross-fertilization....
View Full Document
This note was uploaded on 11/14/2011 for the course BIO 1421 taught by Professor Farr during the Fall '08 term at Texas State.
- Fall '08