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प्रश्न
Identify the type of pyramid given above. Write the identifying feature on the basis of which you identified it.
Identify the type of pyramid given below and write two identifying features of such a pyramid:
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उत्तर
It shows the age pyramid for the expanding human population.
Identifying features:
- There are many more pre-reproductive and reproductive age groups in these kinds of pyramids.
- Compared to pre-reproductive and reproductive age groups, the post-reproductive age group population is minuscule.
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संबंधित प्रश्न
(a) Name the two growth models that represent population growth and draw the respective growth curves they represent.
(b) State the basics for the difference in the shape of these curves
(c) Which one of the curves represents the human population growth at present? Do you think such a curve is sustainable? Give reason in support of your answer.
Study the graph given below and answer the questions that follow :
(i) Write the status of food and space in the curves (a) and (b).
(ii) In the absence of predators, which one of the two curves would appropriately depict the prey population?
(iii) Time has been shown on X-axis and there is a parallel dotted line above it. Give the significance of this dotted line
"Analysis of age-pyramids for human population can provide important inputs for long-term planning strategies." Explain.
What is an age-pyramid?
Animals that can move from fresh water to sea called as ________.
Nutrient enrichment of water body result.
What parameters are used for tiger census in our country’s national parks and sanctuaries?
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Fish
Draw an age pyramid for the ‘zero population growth rate’.
With the help of neatly labelled diagrams, explain the different types of age pyramids of human population.
