Question

The apex of the age pyramid of a stationary population is
A. Very narrow
B. Broad
C. Almost equal to the base
D. None of the above

Answer 1

Hint: Stationary pyramid refers to the pyramid having equal birth and death rates. The population mainly remains constant. It represents a country having low fertility and low mortality.

Complete step by step answer:
A population pyramid is an illustration showing various age groups of the population. Population pyramids help in the study of age distribution, age of a particular population, reproductive capacities of the population. The youngest generation is represented at the base and the oldest at the apex. There are mainly three types of pyramids ;
1. Stationary pyramid: In this pyramid percentage of the population remains the same or remains constant over time. Birth rate = Death rate. Apex is almost equal to the base.
2. Expansive pyramid: This pyramid indicates a fast-growing population. The apex is narrow and the base is broad. The population is high in young ages indicating a high birth rate and narrow apex indicating low life expectancy.
3. Constrictive pyramid: This type of pyramid is narrow at the base which indicates a low birth rate. Mostly the population consists of older individuals which have a high life expectancy and low death rate. This pyramid mostly exists in well-developed countries having good medical facilities, proper use of birth control, and a high level of education.
Hence, option C is correct apex is almost equal to the base.

Note: Out of the three main pyramids in the stationary pyramid apex is almost equal to the base, very narrow bottom in the constrictive pyramid and broad in an expansive pyramid. The stationary pyramid represents a stable population country just like China.