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Ecology Unit
| Question | Answer |
|---|---|
| A single living thing. | organism |
| A collection of individuals from the same species that live in a given area. | population |
| All of the organisms a given area. | community |
| All of the living and non-living parts of a given area. | ecosystem |
| A collection of similar ecosystems with similar climate and similar dominant communities. | biome |
| Part of the planet where life exists. | biosphere |
| Non-living factors that impact organisms. | abiotic factors |
| Living factors that impact organisms. | biotic factors |
| Where an organism lives. | habitat |
| The role an organism has in its environment (where it lives and the job it has there). | niche |
| An interaction between organisms in which one organism eats or attempts to eat another organism. | predation |
| An animal that consumes another animal. | predator |
| An animal that is consumed by another animal. | prey |
| Organisms living together. | symbiosis |
| A type of symbiosis in which both species benefit. | mutualism |
| A type of symbiosis in which one species benefits and the other is neither harmed nor helped. | commensalism |
| A type of symbiosis in which one species benefits and the other is harmed. | parasitism |
| Natural or human disturbances that cause organisms in a given area to die out (or move), allowing new organisms to move-in over time. | ecological succession |
| A type of succession that occurs on barren rock/new ground (no soil existed previously). | primary succession |
| A type of succession that occurs on damaged soil (like after a fire or flood). | secondary succession |
| The first species to move into an area after a succession event. | pioneer species |
| A stable community that is formed after succession slows down. | climax community |
| The area inhabited by a population. | range or geographic distribution |
| The number of individuals per unit of area. | population density |
| How quickly a population increases or decreases in size. | growth rate |
| Movement of individuals into a population. | immigration |
| Movement of individuals out of (exiting) a population. | emigration |
| Represented by a J-shaped curve. Occurs when resources are abundant and predators/disease are at a minimum, so a population can continue growing. | exponential growth |
| Represented by an S-shaped curve. Occurs when resources are limited and predators/disease are present, thus causing the growth rate of a population to slow down. | logistic growth |
| The maximum number of individuals a given area can support. | carrying capacity |
| Something that limits the size or growth of a population. | limiting factor |
| Limiting factors that only affect large, dense populations. | density-dependent limiting factor |
| Limiting factors that affect all members of a population similarly, regardless of size and density. | density-independent limiting factor |
| The increase in concentration of toxins at higher levels of the food chain. | biomagnification |
| Organisms attempting to use the same resource at the same time. | competition |
Created by:
ballb
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