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Biology Study Cards

Ecology-Population Biology Study Cards

TermDefinition
Bacteria Type of organism that carrie out nitrogen fixation
Limiting Factors Biotic or Abiotic resources in the environment that limits population size
Producer/Autotroph An organism that makes its own food
Global Warming Increase in Earth's temperature from the buildup of CO2 and other gases in the atmosphere
Consumer/Heterotroph An organism that cannot make its own food
Decomposer Organisms that breakdown and feed on waste and dead organisms
Niche The role an organism plays in its community
Herbivore Organism that only eats plants
Omnivore Organism that eats plants and meat
Carnivore Organism that only eats meat
Food Web Ecological model showing the relationships that form a network of interactions among organisms in a community
Trophic Lever Diagram showing the flow of energy within an ecosystem
Mutualism (+, +); Symbiotic relationship in which both species benefit.
Parasitism (+, -); Symbiotic relationship in which one species benefits and the other is harmed.
Community Different species living in the same area
Population Same species living in the same area
Predation One organism captures and feeds on another
Carrying Capacity The number of organisms and environment can support over a period of time
Exponential Growth As a population gets larger, it also grows faster; createsa J-shaped curve
Habitat Degradation Damage to habitat by pollution
Immigration When an organism moves INTO a population
Emigration When an organism moves OUT of a population
Habitat Loss The greatest threat to biodiversity
Endangered Occurs when a species is near extinction
Demography Study of human populations
Biodiversity Number and variety of organisms found within an ecosystem or specific area
Invasive Species An organism that is introduced into a new environment, where it is not native
Density-Dependent Factors Limiting factors that depend on population size.
Density-Independent Factors Affects all populations in similar ways, regardless of the population size.
Primary Succession Growth and development of an area by plants and animals that has not been previously occupied by a community.
Secondary Succession Growth and development of an area by plants and animals that has been disturbed.
Nitrogen Fixation Bacteria convert nitrogen gas into ammonia, so it can be easily used bu the plant.
Denitrification Occurs when bacteria return nitrogen back into gas state.
Transpiration Process where plants release water through stomata.
Created by: Shadowslicah