RelationshipsBetween Organisms

Understanding The Terms

Ruth Abatzoglou

Relationships are Complex

Predator? Protector?

Prey?Partners?

Ecological Relationships

• Competition

• Symbiosis

• Mutualism

• Commensalism

• Parasitism

• Predation

Symbiotic Relationships

Three types• Mutualism• Parasitism• Commensalism

Mutualism• Two organism live

together

• Both benefit from each other

Lichen consist of two organisms: algae and fungi

Commensalism

• One organism benefits and the other is neither helped or harmed

Parasitism • One species

benefits

• The other is harmed

• Parasites only help themselves

Predation

A predator can be another organisms prey.

CitationsBeetle, Ladybug. Paul Fuqua.(2003). Retrieved July 19, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Beetle, Soldier (1). Paul Fuqua.(2003). Retrieved July 19, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Bromeliads and other plants growing on tree branch. Paul Fuqua.(2003). Retrieved July 19, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Clown Fish. Discovery Communications, Inc.. (2009). Retrieved July 21, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Earth (Asia). .(2009). Retrieved July 21, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Gray Wolves. Discovery Communications, Inc..(2009). Retrieved July 19, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Lichen Fungi. Discovery Communications, Inc. (2009). Retrieved July 19, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Parasite, definition. Paul Fuqua.(2003). Retrieved July 20, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Predator, Paul Fuqua. (2003). Retrieved July 20, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Rain forest plants (4). Paul Fuqua. 2003). Retrieved July 20, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.

Spider, Crab; with catch. Paul Fuqua.(2003). Retrieved July 20, 2009, from Discovery Education: http://streaming.discoveryeducation.com/.