A population will not exhibit an exponential growth model when there is
A
limited food supply
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B
unlimited space
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C
no predation pressure
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D
no adverse weather conditions
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Solution
The correct option is A limited food supply The growth of a population in a particular habitat follows a specific pattern. In exponential growth, the population size increases at an exponential rate (a steady increase in quantity over time). Exponential growth in a population is possible when the availability of resources such as food and space is unlimited and there is no predation pressure or abiotic stress due to adverse weather conditions.
Under such favourable conditions, a population can fulfil its innate potential to grow in number and can reach enormous population densities in a short time. Population density is the number of people per unit of area (per square kilometre). The exponential growth model results in a ‘J’ - shaped growth curve, when population density (N) is plotted in relation to time (t).