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Ecology Vocab

Ch.18

TermDefinition
Ecology the study of the interactions of living organisms with one another and with their environment
Biotic describes living factors in the environment
Abiotic describes the nonliving part of the environment, including water, rocks, light, and temperature
Population a group of organisms of the same species that live in a specific geographical area
Community all the populations of species that live in the same habitat and interact with each other
Ecosystem a community of organisms and their abiotic environment
Biosphere the part of Earth where life exists
Producers organisms that use sunlight directly to make food
Photosynthesis the process of using sunlight to make food
Consumers organisms that eat other organisms
Herbivore an organism that eats only plants
Carnivore an organism that eats animals
Omnivore an organism that eats both plants and animals
Scavengers omnivores that dead plants and animals
Decomposers organisms that get energy by breaking down dead organisms
Food Chain the pathway of energy transfer through various stages as a result of he feeding patterns of a series of organisms
Food Web a diagram that shows the feeding relationships between organisms in an ecosystem
Energy Pyramid a triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain
Limiting Factor a resource that is so scarce that it limits the size of a population
Carrying Capacity the largest population that an environment can support at any given time
Competition when two or more individuals or populations try to use the same resource, such as food, water, shelter, space, or sunlight
Prey an organism that is killed and eaten by another organism
Predator an organism that eats all or part of another organism
Camouflage blending in to a background
Symbiosis a relationship in which two different organisms live in close association with each other
Mutualism a relationship between two species in which both species benefit
Commensalism a relationship between two organisms in which one organism benefits and the other is unaffected
Parasitism a relationship between two species in which one species, the parasite, benefits from the other species , the host, which is harmed
Coevolution the evolution of two species that is due to mutual influence, often in a way that makes the relationship more beneficial to both species
Pollinator an organism that carries pollen from one flower to another
Food Chain the pathway of energy transfer through various stages as a result of he feeding patterns of a series of organisms
Food Web a diagram that shows the feeding relationships between organisms in an ecosystem
Energy Pyramid a triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain
Limiting Factor a resource that is so scarce that it limits the size of a population
Carrying Capacity the largest population that an environment can support at any given time
Competition when two or more individuals or populations try to use the same resource, such as food, water, shelter, space, or sunlight
Prey an organism that is killed and eaten by another organism
Predator an organism that eats all or part of another organism
Camouflage blending in to a background
Symbiosis a relationship in which two different organisms live in close association with each other
Mutualism a relationship between two species in which both species benefit
Commensalism a relationship between two organisms in which one organism benefits and the other is unaffected
Parasitism a relationship between two species in which one species, the parasite, benefits from the other species , the host, which is harmed
Coevolution the evolution of two species that is due to mutual influence, often in a way that makes the relationship more beneficial to both species
Pollinator an organism that carries pollen from one flower to another
Created by: E.N.