13
Question
A population with a large proportion of pre-reproductive & reproductive individuals and a very less number of post-reproductive individuals is likely to:
A population with a large proportion of pre-reproductive & reproductive individuals and a very less number of post-reproductive individuals is likely to:
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Solution
The correct option is B grow
A population is composed of individuals belonging to different age groups, there will be varying proportions of pre-reproductive, reproductive and post-reproductive individuals. The relative percentage or proportions of these age groups can be used to predict the growth status of the population.
The graphical representation of the age composition of a specific population is called the age pyramid.
Age pyramid is obtained when the per cent individuals of a given age or age group is plotted for the population. It provides a very clear picture of a population’s age-sex composition. With the help of the shape of the pyramid, it can be deduced whether the population is growing, stable or declining.
If a population has a large proportion of pre-reproductive & reproductive individuals, and a very smaller number of post-reproductive individuals, it is likely to grow in the future.
A triangular shaped age pyramid is obtained when the number of pre-reproductive and reproductive individuals is high when compared to the post-reproductive individuals. This is indicative of a growing or expanding population. Hence, the option b is correct.
The population in this case cannot decline as there will be more births than deaths. Hence, the option a is incorrect.
The population can never remain the same in this case as it is going to expand in the future. Hence, the option c is incorrect.
By constructing an age pyramid, the status of any population can be predicted. Hence, option d is incorrect.
A population is composed of individuals belonging to different age groups, there will be varying proportions of pre-reproductive, reproductive and post-reproductive individuals. The relative percentage or proportions of these age groups can be used to predict the growth status of the population.
The graphical representation of the age composition of a specific population is called the age pyramid.
Age pyramid is obtained when the per cent individuals of a given age or age group is plotted for the population. It provides a very clear picture of a population’s age-sex composition. With the help of the shape of the pyramid, it can be deduced whether the population is growing, stable or declining.
If a population has a large proportion of pre-reproductive & reproductive individuals, and a very smaller number of post-reproductive individuals, it is likely to grow in the future.
A triangular shaped age pyramid is obtained when the number of pre-reproductive and reproductive individuals is high when compared to the post-reproductive individuals. This is indicative of a growing or expanding population. Hence, the option b is correct.
The population in this case cannot decline as there will be more births than deaths. Hence, the option a is incorrect.
The population can never remain the same in this case as it is going to expand in the future. Hence, the option c is incorrect.
By constructing an age pyramid, the status of any population can be predicted. Hence, option d is incorrect.
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