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ecology

grade 9 ecology terms & defintions

TermDefinition
Ecology The study of how organisms interact with each other and their environment in a system
Abiotic Non living things, physical things such as minerals, air, or things that are measured such as temperature or hours of daylight.
Biotic Living, these factors are organism such as plants animals, mushrooms, or bacteria
Natural ecosystem Neither planned nor maintained by people.
Artificial ecosystem Artificial Ecosystem is planned and maintained by people. Examples are cities, zoos, Aquarium, Farms.
Species a group of similar organisms in an ecosystem that can reproduce with each other.
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. These species compete for resources within that area.
Niche all the interactions of a given species with its ecosystem.
Ecosystem Any network of interacting living and non living factors.
Biome large geographical region that contains similar ecosystems.
terrestrial land-based / aquatic water-based.
biosphere a part of our planet, including water, land and air, where life exists. Biomes combine to form this.
herbivores an animal that only eats plants such as a deer
Carnivores An animal that mostly eats meat. such as a lion
omnivores an animal that eats both plants and meat such as a bear
predators animals that catches and feeds off of other live animals such as lions
scavengers an animal that mostly eats decaying biomass such as hyenas
parasites obtain their food by feeding off another organism Toxoplasma
detritivores a consumer that feeds on organic matter such as a earthworm
decomposers a special group of consumers that break down such as worms
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
Food chains show 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.
Photosynthesis The process plants use to produce carbohydrates from carbon dioxide, water, and sunlight. (CO2+H20→ sugar + O2)
Biodiversity Number and range of different organisms in an area.
Toxins an antigenic poison or venom of plant or animal origin, especially one produced by or derived from microorganisms and causing disease when present at low concentration in the body.
Bioaccumulation gradual build-up of chemicals in an organism’s body
Respiration a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
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
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
Environment all living things and nonliving things that exist on Earth
Habitat The natural home or environment of an animal, plant, or other organism.
FOOD WEBS A pictorial representation of the feeding relationships among organisms in an ecosystem.
Created by: ha373pi
Popular Ecology sets

 

 



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