Interactions between Organisms Quick review List all of

Interactions between Organisms

Quick review

List all of the biotic & abiotic factors

Ø What is the portion of the earth that supports life called? Biosphere Ø Give 2 examples of abiotic factors. Ø What do you call the role a species plays in its environment? Niche

Ø What is formed by several populations that interact with each other? Community Ø What do you call a community and its abiotic factors? Ecosystem Ø List the levels of biological organization from smallest to largest. O P C E B

Community Interactions Organisms interact in order to obtain energy and resources necessary to stay alive

Competition Organisms of the same or different species attempt to use a limited resource in the ecosystem

Predation An interaction in which one organism captures and feeds on another organism.

Symbiosis A relationship where two species live closely together § 3 types §

1) Mutualism Both species benefit § +/+ §

Golden damselfish being cleaned by 2 different cleaner fish- both parties benefit.

2) Commensalism § One species benefits and the other is not harmed or benefited. § +/0

Crab sheltering in carpet of a sea anemone

3) Parasitism One species benefits and the other is harmed. § +/§

Mosquitoes are a parasite. They benefit from our blood and we are harmed by the bite and/or transmitted disease.

Ø These are common parasites. Ø Lice, Hookworms, Fleas, Ticks, Leeches

Quick Review

Ø Describe commensalism. One organism benefits, the other is neither harmed or benefited. Ø Describe mutualism. Both organisms benefit. Ø Describe parasitism. One organism benefits, the other is harmed.