Bio 20 Unit 2 - Part 3, Ecology *FINAL* Flashcards
Define community
A group of different species living together in a specific area.
Define ecosystem
The interactions between a community of organisms and they non-living environment.
Define symbiosis
Relationships between different organisms in which they rely on each other in some way for survival.
What are the five types of symbiosis?
Predation Parasitism Mutualism Commensalism Competition
Define predation
The predator consumes the prey
Define parasitism
The parasites live in or on the host. The host provides the food for the parasite. The parasite usually does not kill the host.
Define mutualism
Both organisms benefit from the relationship.
Define commensalism
One organism benefits and the other organism is not affected.
Define competition
When organisms compete for the necessities of life, such as food, water mates, sunlight, etc.
What are the two types of competition?
Intraspecific and interspecific.
What is intraspecific competition?
Competition between organisms of the same species.
What is interspecific competition?
Competition between organisms of different species.
Define habitat
Where an organism lives in an ecosystem (location).
Define niche
The way in which an organism interacts with the ecosystem (role/job).
Define ecotone
The boundary between different communities.
Define diversity
The number of different species in an area.
The greater the diversity, the more _______ the ecosystem.
stable
Define succession
When the community of organisms changes over time.
What is primary succession?
When a community begins where no community existed before.
What is secondary succession?
When a community re-grows after it has been destroyed (from fire, tornado, hurricane, tsunami, avalanche, etc..)
Define biomes
A large region of the world with a unique climate and distinct plants and animals.
What factors contribute to the climate if a region?
Latitude, location on a continent, local land forms
Define latitude
Distance north/south of the equator
What are the 3 main zones of the Earth according to the latitude?
Tropical (0-23 degrees N or S of the equator.)
Temperate (23.5 - 66.5 degrees N or S)
Polar (66.5-90 degrees N or S)
