Biology Chapter 44
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| ecology | Study of the interactions of organisms with other organisms and with the physical and chemical environment
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| habitat | Place where an organism lives and is able to survive and reproduce.
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| population | Group of organisms of the same species occupying a certain area and sharing a common gene pool.
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| community | Assemblage of species interacting with one another within the same environment.
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| ecosystem | Biological community together with the associated abiotic environment; characterized by a flow of energy and a cycling of inorganic nutrients.
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| biosphere | Zone of air, land, and water at the surface of the Earth in which living organisms are found.
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| demography | Properties of the rate of growth and the age structure of populations.
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| population density | The number of individuals per unit area or volume living in a particular habitat.
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| population distribution | The pattern of dispersal of individuals living within a certain area.
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| resource | Abiotic and biotic components of an environment that support or are needed by living organisms.
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| limiting factor | Resource or environmental condition that restricts the abundance and distribution of an organism.
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| rate of natural increase (r) | Growth rate dependent on the number of individuals that are born each year and the number of individuals that die each year.
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| biotic potential | Maximum population growth rate under ideal conditions.
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| cohort | Group of individuals having a statistical factor in common, such as year of birth, in a population study.
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| survivorship | Probability of newborn individuals of a cohort surviving to particular ages.
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| age structure diagram | In demographics, a display of the age groups of a population; a growing population has a pyramid-shaped diagram.
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| semelparity | Condition of having a single reproductive effort in a lifetime.
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| iteroparity | Repeated production of offspring at intervals throughout the life cycle of an organism.
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| exponential growth | Growth, particularly of a population, in which the increase occurs in the same manner as compound interest.
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| logistic growth | Population increase that results in an S-shaped curve; growth is slow at first, steepens, and then levels off due to environmental resistance.
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| carrying capacity (K) | Largest number of organisms of a particular species that can be maintained indefinitely by a given environment.
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| density-independent factor | Abiotic factor, such as fire or flood, that affects population size independent of the population’s density.
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| density-dependent factor | Biotic factor, such as disease or competition, that affects population size in a direct relationship to the population’s density.
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| competition | Results when members of a species attempt to use a resource that is in limited supply.
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| predation | Interaction in which one organism (the predator) uses another (the prey) as a food source.
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| r-selection | favors r-strategists, which tend to be small individuals that mature early and have a short lifespan.
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| K-selection | Favorable life-history strategy under stable environmental conditions characterized by the production of a few offspring with much attention given to offspring survival.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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