ENY 3005 Study Guide - Quiz Guide: Commensalism, Tree Squirrel, Parasitism
Document Summary
List the three types of symbiotic relationships and give an example of each: Mutualistic relationships are those in which both species involved bene t. The california grey eld ant, tending aphids on a willow branch while the aphids secrete a sugary substance that feeds the ants. In commensal relationships, one species bene ts but the other neither pro ts nor is harmed. Example, orchids have hollow stems for housing ants. Relationships in which one species bene ts at the expense of another is a parasitic relationship. Insects that eat other insects are called entomophagus. De ne endoparasite (p. 340): parasites that live within body of its host. De ne ectoparasite (p. 340): live outside body of the host. Endo: tree squirrel bot y, horse bot y. T or f: a parasitoid is a parasite. A paraistoid is a parasite that kills host. How is it like a predator, and how is it like a parasite? (p. 233)
