Question

What does the shape of the given age pyramids reflect about the growth status of the related populations?

A) Expanding Stable
B) Stable Declining
C) Expanding Declining
D) Declining Stable

Answer 1

Hint: An age pyramid is the graphical representation which shows the distribution of various age groups present in a population within a country or region of the world. The growing population is represented in a form of a pyramid.

Complete answer:
The age pyramid gives us the information regarding the age-sex structure of a specific population. A broad base with tapering sides shows high fertility rates and high mortality rate in the population of the younger age group.

The first figure given in the question reflects the age pyramid which is triangular in shape. It shows high preoperative individuals, moderate number of reproductive individuals and less post reproductive individuals. This shows a young and rapidly growing population. Thus, the figure shows a growing population.

The second figure given in the question is an inverted pyramid. In this the number of reproductive age individuals is higher than the pre-reproductive individuals. This shows negative growth or a declining population.

When the number of pre-reproductive and reproductive individuals are almost equal then it represents the stable or stationary population. In this the population is neither expanding nor diminishing. This is represented by a bell-shaped pyramid.

Thus, the correct answer is option ‘C’.

Note: The age pyramid helps in studying the cause of changes in population sizes and growth rates. The young population majorly lies below 15 years of age and the elderly population is above 65 years of age. The fertility rate is an important driving factor in determining the shape of the age pyramid.