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Ecology 9

Level of organization

QuestionAnswer
he study of interactions between organisms and their environment ECOLOGY
A large geographical area; ex: desert, rain forest BIOME
What is an ecosystem Includes all organisms and the environment in a particular place ; forest, trees birds squirrels
All interacting organisms living in an area is an example of? COMMUNITY
All memebers of a species that live in one place POPULATION
An organism is an____________? One Living thing
All organisms ____________ with one another? INTERACT
All living things that affect an organism? Biotic factors
All non-living things that affect an organism Abiotic factors
Things that affect size of populations? Birth rate, Death rate, Life expectancy Immigration, Emmigration, Human activity
Movement of organism out of population Emmigration
Movement of organism into a population Immigration
Limiting factors Density-independent factors ex: flood, hurricane 2, Density-dependent factors ex shortage of food
A close living relationship between different species Symbiosis
An organism that hunts, kills and eats another organism. PREDATOR
AN organism that is hunted, killed, and eaten is called? PREY
When a harmless organism looks like a harmful or poisonous one? MIMICRY
When one organism is harmed and the other benefits it is referred to as ..... PARASITISM
A parasite is? The organism that benefits when another is harmed.
The organism that is harmed is called .... The HOST
Parasites that are found outside the host? ECTOPARASITES
AN Endoparasite is? The parasites found OUTSIDE the HOST
When both species benefit? MUTUALISM
When one organism benefits and the other is not affected? COMMENSALISM
Created by: Mr. O
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