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Ecology Words

Unit Test Review of terms

TermDefinition
Biotic Factors Living plants and animls
Abiotic Factors Nonliving components like wind and water
Organism a single individual
Atom smallest level of organization, not living
Cell Made of organelles smallest living level
Population Group of a single species in an area
Community All the plants and animals in an area (biotic)
Ecosystem All the living and nonliving factors in an area
Biosphere The living parts of the Earth
Climax Community The stable ecosystem found after succession
Biome Several ecosystems with similar weather conditions
Limiting Factor Anything that limits what organisms or how many organisms live in an area
Tolerance An organisms ability to survive changes
Adaptations Traits an organism has to make them better fit to their environment
Primary Succession The changes an area takes after being disrupted. Starts with bare rock.
Secondary Succession The changes an area takes after being disrupted. Starts with soil.
Pioneer Species The first species that grows in an area
Biodiversity Having a large variety of different organisms in an area.
Trophic level Feeding steps in a food chain
Producer/ Autotroph Makes its own food
Consumer/ Heterotroph Eats for energy
Primary Consumer Eats Plants
Secondary Consumer Organism that eats a primary consumer
Food Chain Simple path of the transfer of energy. Starts with a plant, arrows point to the consumer.
Food Web All the possible feeding relationships
Ecological Pyramid Shows the transfer of energy in an ecosystem. 10% of energy transfer up and plants are always at the bottom.
Symbiosis Permanent relationship between 2 different species
Mutualism Both species are happy
Commensalism One Happy, One Nothing
Parasitism One Happy, One Sad (Injury)
Competition Both organisms fighting over a resource
Predation One organism hunts the other eaten
Carrying Capacity The maximum number of organisms an area can support. (has enough resources)
Created by: k2hutson