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Ecology 7th
| Question | Answer |
|---|---|
| Autotroph | an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. |
| Heterotroph | an organism deriving its nutritional requirements from complex organic substances. |
| Organism | an individual animal, plant, or single-celled life form. |
| Habitat | the natural home or environment of an animal, plant, or other organism. |
| Biotic factor | a living organism that shapes its environment. |
| Abiotic factor | a non-living part of an ecosystem that shapes its environment. |
| Species | a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. |
| Population | a particular section, group, or type of people or animals living in an area or country. |
| Community | an interacting group of various species in a common location |
| Ecosystem | a biological community of interacting organisms and their physical environment |
| Ecology | the branch of biology that deals with the relations of organisms to one another and to their physical surroundings |
| Immigration | an animal establishes a home in a habitat because it has resources it can utilize or because the habitat is ideal for them. |
| Emigration | The animal leaves its home because the habitat is no longer ideal for them |
| Population density | the concentration of individuals within a species in a specific geographic locale. |
| Limiting factor | anything that constrains a population's size and slows or stops it from growing. |
| Carrying capacity | the number of people, other living organisms, or crops that a region can support without environmental degradation. |
| Natural selection | the process whereby organisms better adapted to their environment tend to survive and produce more offspring. |
| Adaptation | any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment. |
| Niche | the role an organism plays in a community |
| Competition | A symbiotic relationship between or among living things that compete for a limited resources, |
| Predation | the preying of one animal on others. |
| Mutualism | symbiosis that is beneficial to both organisms involved. |
| Commensalism | an association between two organisms in which one benefits and the other derives neither benefit nor harm. |
| Parasitism | the practice of living as a parasite in or on another organism. |
| Parasite | an organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense. |
| Host | an organism that harbors a parasite and supplies it with nutrients. |
| Succession | a number of people or things sharing a specified characteristic and following one after the other. |
| Primary succession | happens when a new patch of land is created or exposed for the first time. |
| Pioneer species | hardy species which are the first to colonize barren environments |
| Secondary succession | type of ecological succession (the evolution of a biological community's ecological structure) |
Created by:
ballman08
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