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25 Cards in this Set
- Front
- Back
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Ecosystem |
a group of living organisms and its physical environment and the relationships between them. |
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2 Major Components |
Biotic Components Abiotic Components |
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Biotic Components |
are the plants (producers), animals (consumers) bacteria, and fungi (decomposers) that live in the ecosystem |
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Abiotic Components |
having no life; lifeless part of an ecosystem such as soil, water, atmosphere, sunshine, nutrients |
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Community |
a group of species that line in the same habitat and interact with each other. |
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Ecological niche |
the function of an organism in an ecosystem |
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Food Chain |
a diagram that shows the feeding relationships among a few organisms. |
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Food Chain |
A path of energy and nutrients through a community |
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Producers |
- 1st trophic level - 1st link in the food chain |
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Kinds of Consumers |
Herbivore Carnivore Omnivore Decomposers |
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Herbivore |
1st order consumer (2nd trophic level) a consumer that eats only producers |
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Carnivore |
2nd order consumer (3rd trophic level) A consumer that eats only other consumers |
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Omnivore
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3rd order consumer (4th trophic level) A consumer that eats producers and other consumers. |
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Decomposers |
4th order consumer (5th trophic level) A consumer that puts materials from dead plants and animal back into soil, air, and water |
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Food Web |
a combination of several interlocking food chains or pathways of energy |
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Food Pyramid |
shows the energy transfer in the biosphere. There is a decrease in energy from one trophic level to the next because part of the food becomes the consumer's flesh, part is used by the consumers to perform their activities, and becomes transformed into heat which diffuses to the surrounding and becomes unavailable for further use. |
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Community Relationships |
Mutualism Competitioin Commensalism Parasitism Predation |
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Symbiosis |
means "living together" |
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Mutualism |
a "give and take relationship" |
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Competition |
This relationship occurs when two organisms fight for the same needs such as food, water, and other materials. |
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Commensalism |
one organism is benefited and the other is unaffected. |
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Parasitism |
occurs when one organism is benefited and the other is harmed |
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Predation |
a kind of interaction where in an organism captures another organism for food. |
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Predator |
an animal that kills animals and eats it |
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Prey |
an animal that is killed and eaten |
