ch.18 flashcards
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| tissue | a group of similar cells that perform a common function | organ | a collection of tissues that carry out a specialized function of the body | consumer | an organism that eats other organisms or organic matter | energy pyramid | a triangular diagram that shows an ecosystem's lost of energy which results as energy passes through the ecosystems food chain
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| organs system | a group of organs that work together to perform body functions | organism | living thing. Some organisms are composed of a single cell. Other organisms are composed of many cells. | carnivores | an organism that eats animals | carrying capacity | the largest population that an environment can support at any given time
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| population | group of living things of the same species that live in a specific area. | community | all of the populations of species that live in the same habitat and interact with each other | decomposers | an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients | prey | an organism that is killed and eaten by another organism
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| ecosystem | a community of organisms and their abiotic, or nonliving, environment | biome | a large region characterized by a specific type of climate and certain types of plant and animal communities | food web | a diagram that shows the feeding relationships between organisms in an ecosystem | commensalism | a relationship between two organisms in which one organism benefits and the other is unaffected
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| biosphere | the part of Earth where life exists; includes all of the living organisms on Earth | producers | organisms that make their own food, usually by using the energy from sunlight to make sugar. | food chain | the pathway of energy transfer through various stages as a result of the feeding patterns of a series of organisms | symbiosis | a relationship in which two different organisms live in close association with each other
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| coevolution | when a long term change happens in two species because of their close interactions.
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| abiotic | describes the nonliving part of the environment, including water, rocks, light, and temperature | biotic | describes living factors in the environment | tropic level | Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy | mutualism | a relationship between two species in which both species benefit
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| ecology | the study of the interactions of living organisms with one another and with their environment | cell | the smallest functional and structural unit of all living organisms; usually consists of a nucleus, cytoplasm, and a membrane | energy | the capacity to do work | predator | an organism that kills and eats all or part of another organism
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| herbivore | an organism that eats only plants | omnivores | an organism that eats both plants and animals | scavenger | An animal that feeds on carrion, dead plant material, or refuse. | parasitism | a relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed
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