Symbiotic Relation

Symbiosis a a close relation between to organisms which is beneficial to atleast one of the organisms. The three different types of symbiotic relations are mutualism, commensalism, and parasitism. Mutualism is a relation in which both species benefit. Commensalism is when only one of the species benefits however, the other organism is neither harmed nor helped. Lastly, parasitism is when an organism lives in or on an other sprganism and the other organism is harmed.
The picture on the right is some poison ivy I found on a tree, in my backyard. (Remember, "Raggy rope, Don't be a dope!"). Poison ivy is an example of a mutualistic relationship. For example, poison ivy is a defense mechanism for a plant or tree because it drives away predators. In turn, the poison ivy feeds on the tree and recieves nutrients.