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14 Cards in this Set
- Front
- Back
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Species |
A group of organisms that is distinct from any other group of organisms. They share common characteristics and are capable of reproducing with each other to produce fertile offspring. |
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Sexual Reproduction |
Reproduction involving two individuals and results in genic variation. |
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Genetic Variation |
Arises due to spontaneous mutation and genetic recombination of an organisms DNA. |
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Natural Selection |
Promotes the adaption of an organism to its environment by acting on these variations and selecting for the traits that better enable the organism to compete, survive, and reproduce. |
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Speciation |
If the adaptations nessasary for the organism to survive are fundamentally different from the original organism, a new species may develop. |
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Population |
Members of a species that are living in the same area and sharing reasorses. |
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Community |
Populations of different species in an area. |
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Niche |
An organism's habits and habitat withing the community. Ex What it eats; what effect it has on the habitat and other species. |
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Interspecies compitition |
When two species compete for the use resources. |
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Resource Partitioning |
Similar species dividing resources among them. |
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Symbiotic Assosiations |
Interaction among different species. At least one member benefits. |
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Commensalism |
When one organism benefits but the other doesn't benifite and isn't harmed. Ex robin, tree; Shark, Remora. |
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Mutualism |
A situation when both organisms benifit. Ex fungus, algea(lichen). |
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Parastism |
When one organism is benifeted and another is harmed. The one that gains is the Parasite. The one that was harmed is the host. Ex viruses; bacteria; fungi; leaches. |
