FLJR/SRHS Biology Vocabulary Chapter 5
Terms
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- age structure
- The relative number of individuals of each age in a population.
- carrying capacity
- The maximum population size that can be supported by the available resources, symbolized as K.
- demography
- The study of statistics relating to births and deaths in populations.
- density-dependent factor
- Any factor influencing population regulation that has a greater impact as population density increases.
- density-independent factors
- Any factor influencing population regulation that acts to reduce population by the same percentage, regardless of size.
- exponential growth
- In populations, the increasingly accelerated rate of growth due to the increasing number of individuals being added to the reproductive base. Exponential growth is very seldom approached or sustained in natural populations.
- logistic population growth
- A model describing population growth that levels off as population size approaches carrying capacity.
- population density
- The number of individuals of a population per unit area or volume of living space.
- predator
- An organism that eats other living organisms.
- prey
- An organism eaten by another organism.