Ecology Definitions Latest 2023 Rated A
Ecology ✔✔The study of the interactions between living organisms and between organisms and
their environment.
Ecosystem ✔✔A community and its abiotic conditions.
Population ✔✔A
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Ecology Definitions Latest 2023 Rated A
Ecology ✔✔The study of the interactions between living organisms and between organisms and
their environment.
Ecosystem ✔✔A community and its abiotic conditions.
Population ✔✔A group of organisms of the same species living in a certain area at a certain
time.
Habitat ✔✔The environment in which a species normally lives or the location of a living
organism.
Species ✔✔A number of organisms which can interbreed to produce fertile offspring.
Niche ✔✔The role an organism plays in its community.
Trophic level ✔✔The place of an organism in a food chain or web.
Autotroph ✔✔An organism which makes its own food using inorganic sources of carbon.
Heterotroph ✔✔An organism which requires pre-formed organic molecules, which ingests
organic material.
Producer ✔✔The first trophic level in a food chain which provides the energy for subsequent
levels.
Consumer ✔✔An organism which gets its nutrients and energy by ingesting other organisms or
parts of them.
Community ✔✔A group of interacting populations in a certain area.
Detritivore ✔✔An animal that consumes decomposing organic particles getting its nutrients
primarily from microbes on these particles.
Saprotroph ✔✔Organism that feeds by secreting digestive enzymes onto its food source and
absorbing the products of digestion.
Carrying capacity ✔✔Maximum average/biomass of organisms that can be sustained by an area
in the long term.
Random sample ✔✔A sampling method used to ensure that every individual in a studied area
has an equal chance of being observed.
Evolution ✔✔The process of cumulative change of heritable characteristics of a population.
Herbivory ✔✔A form of interaction where a primary consumer feeds upon a producer.
Predation ✔✔A form of interaction where a consumer feeds upon another consumer.
Parasitism ✔✔A form of interaction where an organism lives in or in a host and obtains food
from it. The host is always harmed.
Competition ✔✔A form of interaction where two species compete if the amount one species uses
reduces the amount available to the other.
Mutualism ✔✔A form of interaction where members of different species live in a close
relationship from which both benefit.
Fundamental niche ✔✔The full potential range of the physical, chemical, and biological factors
a species can use if there is no competition from other species.
Realized niche ✔✔The part of its fundamental niche that a species actually occupies.
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