SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A measurement of population per unit area
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All the inhabitants of a particular area
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The actual number of individuals in a population
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None of the above
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Detailed explanation-1: -The most fundamental demographic parameter is the number of individuals within a population (Lebreton et al. 1992). Population size is defined as the number of individuals present in a subjectively designated geographic range.
Detailed explanation-2: -Population size is the number of individuals in a population. For example, a population ofinsects might consist of 100 individual insects, or many more. Population size influences the chances of a species surviving or going extinct. Generally, very small populations are at greatest risk of extinction.
Detailed explanation-3: -Population size is the total number of individuals present in a population.
Detailed explanation-4: -The best way to measure the size of a population is to count all the individuals in that popula-tion. When determining the population sizes of trees or other relatively immobile organisms, this method is practical. If the organism is mobile, however, such as a fish, counting every individual would be difficult.
Detailed explanation-5: -The number of individuals living within that specific location determines the population density, or the number of individuals divided by the size of the area. Population density can be used to describe the location, growth, and migration of many organisms.