Chapter 20 Section 3 Vocabulary
|1. Adaptation |
A behavior or physical characteristic that allows an organism to survive or reproduce in its environment.
|2. Commensalism |
A relationship between two species in which one species benefits and the other is neither helped nor harmed.
|3. Competition |
The struggle between organisms to survive as they attempt to use the same limited resource.
|4. Host |
The organism that a parasite or virus lives in or on.
|5. Mutualism |
A close relationship between organisms of two species in which both organisms benefit.
|6. Natural Selection |
A process by which individuals that are better adapted to their environment are more likely to survive and reproduce than others of the same species.
|7. Niche |
The role of an organism in its habitat, or how it makes its living.
|8. Parasite |
The organism that benefits by living on or in a host in a parasitism interaction.
|9. Parasitism |
A relationship in which one organism lives on or in a host and harms it.
|10. Predation |
An interaction in which one organism kills another for food.
|11. Predator |
The organism that does the killing in a predation interaction.
|12. Prey |
An organism that is killed and eaten by another organism
|13. Symbiosis |
A close relationship between two organisms of different species that benefits at least one of the organisms