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Chapter 18 Vocab

Life science terms

TermDefinition
ecology the study of the interactions of organisms with one another and with there environment.
biotic organisms that live together and interact with one another.
abiotic part of the environment that consists of the nonliving factors such as water, soil , 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
herbivore organism that eats only plants.
carnivore an organism that eats animals
consumers organisms that eat other organisms
omnivore an organism that eats both plants and animals
food chain a pathway of energy transfer though various stages as a result of the feeding patterns of a series of organisms
food web a diagram that shows the feeding relationships between organisms in a ecosystem.
scaverngers omnivores that eat dead plants and animals.
photosyntheisis the process of making food from the sun's energy
producers organisms that use sunlight directly to make food.
energy pyriamid a triangular diagram that shows an ecosystems loss of energy, which results as energy passes through the ecosystem's food chain.
carrying capacity the largest population that an encironment can support.
limiting population a resource that is so scarce that it limits the size of a population.
prey an organism that is killed and eaten by another organism.
predator an organism that eats all or part of another organism.
warning colors bright colors on an organism that warn predators that it is posonious.
camouflage blending in with the background of the enviornment.
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 one 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.
parasite the organism that benifeits
host the organism that is harmed.
pollinator an organism that carries pollen from one flower to another.
Created by: Mini_Festus