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प्रश्न
With the help of suitable diagrams, explain how the age structures determine the trend of population.
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उत्तर
The relative proportion of individuals of various age groups in the population is called the age structure of the population.
Role of age structure:
Age structure (distribution of age groups) determines the trend of the population.
- Growing population: The population having a larger number of individuals of the pre-reproductive age groups shows a very rapid rate of growth.
- Steady population: Population having the same number of pre-reproductive and post-reproductive age groups is stable.
- Declining population: A large number of post-reproductive and a small number of pre-reproductive groups make the population decline.
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संबंधित प्रश्न
Construct an age pyramid which reflects an expanding growth status of human population.
Describe diagrammatic representation of age structure showing declining population.
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Which district has the lowest child sex ratio?
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State any two districts with favourable sex ratio. Indicate the ratios.
Which of the following is INCORRECT?
What will be the net increase in the population if the average natality was 250, average morta1ity 240, immigration 20 and emigration 30?
A population is a group of all ____________ in a given time.
Match the following:
| Column A | Column B | ||
| (i) | Organism | (a) | Large unit with specific climatic zone |
| (ii) | Population | (b) | Different species in particular area |
| (iii) | Community | (c) | Same species in a geographical area |
| (iv) | Biome | (d) | Basic unit of ecological hierarchy |
