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Ecology Terms 2025

Gr. 9 Ecology Terms and Definition

TermDefinition
Ecology Study of how other organisms interact with each other as well as with their environment in a system.
Environment All living things and nonliving things that exist on Earth.
Habitat The natural home or environment of an animal, plant, or other organism.
Abiotic Non living things, physical things such as , minerals, air or things measured such as temperature, hours of daylight, salt concentration.
Biotic Living, these factors are organism such as plants, animals, mushrooms, bacteria, algae.
Types of Ecosystem / Ecosystem A complex self regulating system in which living things interact with living and non living things.
Natural ecosystem A natural ecosystem is neither planned nor maintained by people.
Artificial ecosystem Artificial Ecosystem is planned and maintained by people. Examples: City, Zoo, Aquarium, Farm.
Herbivore An animal that eats ONLY plants.
Carnivore An animal that eats mostly meat.
Omnivore An animal that eats both plants and meat.
Predator Animals that catches and feeds off of other live animals.
Scavenger An animal that mostly eats decaying biomass.
Parasite Obtain their food by feeding off another organism which continues to live.
Detritivore A consumer that feeds on organic matter.
Population A group of members of the same species that live in the same area.
Community Populations of different species that live and interact in the same area.
Ecosystem Interaction of community and surrounding abiotic components.
Biome Large geographical region that contains similar ecosystems.
Biosphere A part of our planet, including water, land and air, where life exists. Biomes combine to form this...
Biodiversity Number and range of different organisms in an area.
Toxin Harmful substances that contaminate the air, water, soil, and food, potentially causing health problems for organisms.
Bioaccumulation Gradual build-up of chemicals in an organism’s body.
Photosynthesis The process plants use to produce carbohydrates from carbon dioxide, water, and sunlight.
Respiration The operation in which organisms within a specified ecosystem use the process to convert organic carbon to carbon dioxide.
Extirpated Species that no longer exist in a particular region but still occurs elsewhere.
Amphibious Born in water, breathing with gills but can live on land or in water.
Autotroph Organisms that can make their own food from basic nutrients and sunlight. Examples: green, plant, algae.
Heterotroph Organisms that must feed on other organisms to obtain energy.
Carrying capacity Maximum number of individuals that an ecosystem can support without reducing its ability to support future generations of the same species.
Commensalism Type of symbiosis in which one species benefits from a relationship without helping or harming the other species.
Mutualism A type of symbiosis in which both species benefit from the symbiotic partnership.
Symbiosis Close interaction between two different species in which members of one species lives in on or near members of another species.
Terrestrial Land-based animal.
Food Webs A pictorial representation of the feeding relationships among organisms in an ecosystem.
Food Chains Show two important things: A step-by-step sequence of who eats whom in an ecosystem. The one-way flow of energy from the producer to the top level consumer.
Created by: hu899hu
Popular Ecology sets

 



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