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प्रश्न
Describe Population Age Distribution.
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उत्तर
The proportion of the age groups (pre-reproductive, reproductive and post reproductive) in a population is its age distribution attribute. This determines the reproductive status of the population at the given time and is an indicator of the future population size. Usually a rapidly growing population will have larger proportion of young individuals. A stable population will have an even distribution of various age classes. A declining population tends to have a larger proportion of older individuals.
Age distribution pyramids
संबंधित प्रश्न
Observe the following diagram of Age pyramid carefully and identify the type of population growth rate seen.
The arrangement or composition of a population based on different age groups is called:
For ecological analysis, which functional age group includes individuals aged 0–14 years?
For ecological analysis, which functional age group includes individuals aged 15–44 years?
Which geometric shape characterises an expanding age pyramid?
Pre-reproductive and reproductive age groups being nearly equal in size is characteristic of a:
A narrow base due to a very low percentage of pre-reproductive individuals identifies a:
A drastically reduced birth rate and a population that is shrinking/dying off indicate:
Which countries are examples of a declining age pyramid?
Which method is used for comparative ecological investigations without finding the absolute number?
