Which of the following best describes the difference between population size and population density?

A. Population density measures the abundance of an organism, whereas population size measures the distribution

B. Population size measures the abundance of an organism, whereas population density measures the distribution

C. Population size measures abundance, but population density measures how rapidly the size changes

D. Both variables measure abundance, but population density takes the into account the size of individuals, not just the number of individuals in the population

E. None of these descriptions are correct

Respuesta :

Population size refers to the number of individuals, while population dendity refers to the number of individuals per unit of area or volume. The correct option is E. None of these descriptions are correct.

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Before answering the question, let us review the concepts of population size and density.

  • Population size refers to the number of individuals composing a population.

Population size might determine the destiny of the population.

A small population has more chances to get extinct than a bigger-sized population.

  • Density refers to the average number of individuals of the same species per unit of area or volume. This measure may be more significant than population size.

To estimate population density there are two possible methods: Direct methods and indirect methods.  

Abundance indexes are the parameters related to density, and they reflect changes that might happen in the target population density. They are commonly used to compare population sizes.

According to these concepts, the correct option is E. None of these descriptions are correct.

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