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Biology Ch 2
| Term | Definition |
|---|---|
| Predation 2.1 | Act of one organism feeding on another organism, predator + prey |
| Abiotic Factor 2.1 | Any nonliving factor in an organisms environment such as soil, water, temperature, and light availability. |
| Mutualism 2.1 | Symbiotic relationship in which both organisms benefit. |
| Competition 2.1 | Occurs when more than one organism uses a resource at the same time. |
| Parasitism 2.1 | Symbolic relationships in which one organism benefits at the expense of another organism. |
| Biogeochemical Cycle 2.3 | Exchange of matter through the biosphere involving living organisms, chemical processes and geological processes. |
| Ecology 2.1 | Scientific study of all the inter-relationships between organism and their environment. |
| Biotic Factor 2.1 | Any living Factor in an organisms environment. |
| Habitat 2.1 | Physical area in which an organism lives. |
| Nitrogen Cycle 2.3 | Abundant in atmosphere 78%. |
| Niche 2.1 | Role or position of an organism in its environment. |
| Nitrogen Fixation 2.3 | Process in which nitrogen gas is captured and converted into a form plants can use. |
| Biome 2.1 | Large group of ecosystems that share the same climate and have similar types of communities. |
| Abiotic 2.1 | Rain, soil, temperature, sun. |
| Biosphere 2.1 | Relatively thin layer of Earth and its atmosphere that supports life. |
| Populations 2.1 | Individual organisms of a single species that share the same geographic location at the same time. |
| Ecosystem 2.1 | Biological community and all the nonliving factors that affect it. |
| Commensalism 2.1 | Symbiotic relationship in which one organism benefits and the other organism is neither helped nor harmed. |
| Symbiosis 2.1 | Close mutualistic, parasitic, or commensal association between two or more species that live together. |
| Biotic Factor 2.1 | Food |
| Biological Community 2.1 | All the interacting, populations of different species that live in the same geographic location at the same time. |
| Heterotrophs 2.2 | Organism that cannot make its own food and gets its nutrients and energy requirements by feeding on other organisms. |
| Sun 2.2 | Ultimate energy source. |
| Energy 2.2 | Only 10% of the _________ is passed on the next trophic level. |
| Matter 2.3 | Anything that takes up space and has mass. |
| Carnivore 2.2 | Heterotroph that preys on other heterotrophs; meat eater |
| Autotroph 2.2 | Organisms that captures energy from sunlight or inorganic substances to produce its own food, provide the foundation of the food supply for other organisms. |
| Biomass 2.2 | Total mass of living matter at each trophic level. |
| Food Web 2.2 | Model that shows many interconnected food chains and path ways in which energy and matter flow through an ecosystem. |
| Trophic Level 2.2 | Each step in a food chain or food web. |
| Herbivore 2.2 | Heterotroph that eats only plants. |
| Food Chain 2.2 | Simplified model that shows a single path for energy flow through an ecosystem. |
| Detritivore 2.2 | Heterotroph that decomposes organic material and returns the nutrients to soil, air and water, making the nutrients available to other organisms. |
| Omnivore 2.2 | Heterotroph that consumes both plants and animals. |
| Nutrients 2.3 | Chemical substances that living organisms obtain from the environment to carry out life processes and sustain life. |
| Denitrification 2.3 | Process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere. |
| Secondary Consumer 2.2 | An organism that largely feeds on primary consumers. |
| Primary Consumer 2.2 | Any organism that consumes or feeds on autotrophs. |
| Tertiary Consumer 2.2 | An organism that largely feeds on secondary consumers. |
| 10% Law 2.2 | Only 10% of energy is stored when an organism from one level of the ecological pyramid is eaten by an organism from one level above. |
| Ecological Pyramid 2.2 | A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or web. |
Created by:
smeisman
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