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BiologyCh.2Ecology
Ch. 2 Principles of Ecology Review (Biology)
| Question | Answer |
|---|---|
| Place in which an organism lives; spends majority of it's lifetime | Habitat |
| The presence of interbreeding individuals in one place at a given time | Population |
| A group of biological communities that interact with the physical environment | Ecosystem |
| Converting nitrogen from a gas to a solid/usable form by bacteria | Nitrogen fixation |
| The movement of chemicals on a global scale from abiotic through biotic parts of the environment | Biogeochemical cycle |
| Largest level of ecological organization | Biosphere |
| Smallest level of ecological organization | Organism |
| The wind blowing through branches is what type of factor in that environment? | Abiotic |
| The caterpillar eating the trees leaves is what type of factor in that environment? | Biotic |
| The process of pollination demonstrates what type of symbiotic relationship? | Mutualistic |
| What type of heterotroph is a snake? | Carnivore |
| How does ALL energy first enter an ecosystem? | Sun |
| Where is the largest concentration of nitrogen on earth found? | Atmosphere |
| A group of individual organisms of the same species is known as a(n) | Population |
| The study of interactions among organisms and their environment | Ecology |
| Collect energy from the sun; storing it for other organisms | Autotrophs |
| Act of one organism consuming another | Predation |
| Allows a scientist to represent or simulate a process or system | Model |
| Close relationship that exists when two or more species live together | Symbiotic relationship |
| Group of interacting populations | Biological community |
| Large group of ecosystems that share the same climate and have similar types of communities | Biome |
| Living factors in an organisms environment | Biotic factors |
| Nonliving factors in an organisms environment | Abiotc factors |
| Occurs when more than one organism uses a resource at the same time | Competition |
| Portion of the earth that supports life | Biosphere |
| Great examples of mutualistic relationships in nature; algae and a fungi | Lichens |
| Food chains and food webs represent what kind of data? | Qualitative |
| Ecological pyramids represent what kind of data? | Quantitative |
| Part of all organic compounds; major component of living things | Carbon |
| Inorganic nutrients ___ through the environment due to flow of energy in ecosystems | Cycle |
| Nutrient needs by organisms to produce proteins | Nitrogen |
| The current in the stream a salmon is swimming up to spawn is what time of factor in its environment? | Abiotic |
| Most life on earth is found where? | Northern hemisphere |
| Relationship in which one organism benefits and the other is unharmed/unaffected. | Commensalism |
| Type of relationship in which one organism benefits at the expense of the other | Parasitism |
| Ability to cause change; cannot be created or destroyed, simply transformed | Energy |
| Model which shows the many ways energy can flow through organisms | Food web |
| Simplified model representing the transfer of energy from organism to organism | Food chain |
| Each step in a food web or food chain | Trophic level |
| Eat fragments of dead matter int he ecosystem and return nutrients to the soil, air and water | Detritivores |
| Release enzymes to digest organic material around them and absorb the simplified nutrients | Decomposers |
| Anything that has mass or takes up space | Matter |
| Chemical substance that an organism must obtain from it's environment in order to sustain life | Nutrient |
| Total mass of living matter at each trophic level; decreases at each level | Biomass |
| Studies water processes, such as distribution in nature, water flow in a dam or river, etc. | Hydrologist |
| All organisms on earth rely on ___ water | Fresh |
| Bacteria in soil convert fixed nitrogen compounds back into nitrogen gas which returns to the atmosphere | Denitrification |
| Element that is essential for the growth and development of organisms; may be locked up in short or long term cycles | Phosphorous |
Created by:
SavannahElkins
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