Question

A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations A and B twenty years apart. Select the correct interpretation about them.

Interpretations:

• A. “B” is earlier pyramid and shows stabilized growth rate
• B. “B” is more recent showing that population is very young
• C. “A” is the earlier pyramid and no change has occurred in the growth rate
• D. “A” is more recent and shows slight reduction in the growth rate

Answer 1

The correct option is D “A” is more recent and shows slight reduction in the growth rate

If the percentage of individuals of a given age or age group is plotted for the population, an age pyramid is formed. The age distribution of males and females are shown in a combined diagram. A population on the basis of its age is divided into three groups, namely the pre-reproductive age group, reproductive age group, and post-reproductive age group. The population size is shown on the x-axis (horizontal) and age-groups on the y-axis (vertical). Since the country has adopted measures to control population growth graph ‘B’ is an earlier one while ‘A’ is a more recent graph which shows a slight reduction in the growth rate. This is evident from the fact that in the pyramid A the proportion of pre-reproductive individuals has reduced in comparison to that of pyramid B.