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Ecology Unit 1

QuestionAnswer
Organism A living thing.
Habitat an environment that provides the things a specific organism needs to live,grow, and reproduce.
Biotic Factor A living or once living part of an organism's habitat.
Abiotic Factor a nonliving part of an organism's habitat.
Species a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
Population All the members of one species living in the same area.
Community all different populations that live together in a particular area.
Ecosystem The community of organisms that live in a particular area, along with their nonliving environment.
Ecology The study of how organisms interact with each other and their environment.
Birth Rate the total number of live births per 1,000 of a population in a year.
Death Rate the number of deaths per 1,000 individuals for the given time period
Immigration Moving into a population
Emigration leaving a population
Population Destiny the number of individuals in an area of a specific size
Limiting Factor an environmental factor that causes a population to stop growing or decrease size.
Carrying Capacity the largest population that an area can support
Natural Selection A characteristic that makes an individual better suited to a specific environment
Adaption The behaviors and physical characteristics that allow organisms to live successfully in their environments
Niche The role of an organism in a habitat
Competition The struggle between resources
Predation An interaction in which one organism kills another for food or nutrients
Predator The organism that does the killing
Prey The organism that is killed
Symbiosis Any relationship in which two species live closely together and at least one of the species benefits
Mutualism A relationship in which both species benefit
Commensalism A relationship in which one species benefits and other species is neither helped nor harmed
Parasitism A relationship that involves one organism living with, on, or inside another organism and harming it
Parasite An organism that benefits
Host The Organism that it lives on or in
Succession Series of predictable changes that occur in a community over time
Primary Succession Series of changes that occurs in an area where no soil or organisms exist
Pioneer Species The first species to populate an area
Secondary Succession The series of changes that occurs in an area where the ecosystem has been disturbed
Created by: aem2024000047
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