Ecology Test Flashcards
The scientific study of interactions among organisms and their environments.
Ecology
The portion of Earth that supports life. From the atmosphere through the oceans.
Biosphere
The nonliving parts of an organism’s environment.
Abiotic factors
All the living organisms that inhabit an environment.
Biotic factors
A group of organisms that are able to produce fertile offspring and that share common genes and therefore resemble each other in appearance.
Species
A group of organisms of one species that interbreed and live in the same place at the same time.
Population
A collection of several (or all of the) interacting populations that inhabit a common environment.
Community
The interactions among populations in a community. Includes all of the biotic factors as well as the community’s physical surroundings, or abiotic factors.
Ecosystem
A group of ecosystems with the same climax communities (&/or climates).
Biome
Put in order: Organism, Biosphere, population, ecosystem, species, biome, community
Organism, species, population, community, ecosystem, biome, biosphere.
The place where an organism lives out its life.
Habitat
The role and position a species has in its environment. It includes all biotic and abiotic interactions as an animal meets its needs for survival and reproduction.
Niche - an organism’s way of life.
The act of killing and eating another organism.
Predation
An organism that kills and eats another organism
Predator
An organism that is killed and eaten by a predator
Prey
The relationship between species that attempt to use the same limited resource (a dog and cat fighting for the last piece of meat)
Competition
A close association between two or more organisms of different species.
Symbiosis
A type of symbiotic relationship in which one species (the symbiont) benefits and the other species (the host) is neither harmed nor benefitted.
Commensalism