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Ecology (Unit2 HBio)
Ecology (Unit 2 H Bio STEELY)
| Question | Answer |
|---|---|
| abiotic | nonliving factor |
| biotic | anything living |
| organism | one living thing |
| population | a group of the same species that live in one place at one time |
| community | all of the living organisms in the same place at the same time |
| ecosystem | contains both abiotic and biotic factors interacting together in an environment |
| biosphere | the part of the earth that can support life |
| aquatic | in water |
| terrestrial | on land |
| habitat | the natural environment in which an organism lives; includes abiotic and biotic factors |
| niche | the role or function of an organism or species in an ecosystem |
| producers | capture light energy to make organic molecules (food) |
| chemosynthesis | produce carbohydrates by using energy from inorganic molecules |
| biomass | organic material in an ecosystem |
| gross primary productivity | rate at which producers in an ecosystem capture energy |
| net primary productivity | rate at which biomass accumulates |
| consumers | heterotrophs are called |
| herbivores | eat plants |
| carnivores | eat other consumers |
| omnivores | eat both plants and animals |
| detritivore | feeds on "garbage" of an ecosystem |
| decomposers | cause decay by breaking down the complex molecules in deed tissues and wastes into simpler molecules |
| trophic level | indicates position in the sequence of energy transfers |
| food chain | single pathway of feeding relationships among organisms in an ecosystem that results in energy transfer |
| food web | interrelated food chains in an ecosystem |
| symbiosis | close interactions between organisms |
| predator | captures, kills, and consumes other organisms |
| prey | the organism captured |
| mimicry | defense mechanism, that a harmless species resembles a poisonous or distasteful species |
| parasitism | one individual in harmed while the other organism benefits (feeds on its host) |
| competition | results from niche overlap- using the same limited resources |
| mutualism | cooperative relationship in which both organisms benefit |
| commensalism | one organism benefits, other organism is not affected |
| population size | number of individuals within a given area |
| population density | measures how crowded a population is per area or volume |
| growth rate | shows how the population's size changes within a given time |
| exponential growth model | describes a population growing rapidly |
| limiting factors | restrains the population growth |
| logistic growth model | this model show the influence of limiting factors |
| carrying capacity | number of individuals that the environment can support over a period of time |
| density independent factors | factors include weather, floods, or fires |
| density dependent factors | include resources such as food, or nesting sites |
| keystone species | a species that has a disproportionately large effect on its natural environment relative to its abundance |
Created by:
onceamustang
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