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3 Cards in this Set
- Front
- Back
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Ecology |
Scientific study of the interactions among organisms and between organisms and their environment -deals with the issues of distribution and abundance (Where organisms are and aren’t found & how many organisms occur in different places) |
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Symbiosis and the distinctions between its 3 forms |
Relationship between 2 different organisms living in direct contact with one another -Parasitism: one organism derived nourishment from another causing harm to the host organism -Commensalism: one organism benefits from another causing no harm to the host Mutualism: both organisms benefit from their association |
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Explain how energy flows through an ecosystem |
Determined by feeding or trophic levels -autotrophs(self-feeders): 1st trophic level. Use light energy to make food(photosynthesis). Primary producers. -Heterotrophs: the rest of the trophic levels. Directly/indirectly dependent on the photosynthetic output of primary producers for energy. Consumers. -primary consumers: plant or algae eaters -secondary consumers: organisms that eat herbivores (carnivores) -tertiary consumers: carnivores that eat other carnivores -decomposers: organisms that feed on dead organisms, like bacteria and fungi -omnivores: eat both plants and animals, like humans, derive energy from many trophic levels |
