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प्रश्न
Represent diagrammatically three kinds of age-pyramids for human populations.
Name three representative kinds of age-pyramids for human population and list the characteristics for each one of them
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उत्तर
A population can be composed of individuals of different age groups. Age distribution plot for a given population is given by the age pyramid.
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संबंधित प्रश्न
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
Define the carrying capacity.
Answer the following question.
What is "population" according to you as a biology student?
Study the flow chart given below and complete the equation that follows by identifying 1, 2, 3 and 4.
Nt + 1 = Nt + {(1+ 2) − (3 + 4)}
The phenomenal and rapid increase of population in a short period is called ______.
Population having large number of postreproductive and small number of prereproductive age group is called
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Deer
Draw an age pyramid for the ‘zero population growth rate’.
Important attributes belonging to a population but not to an individual are:
- Birth rate and death rate
- Male and female
- Birth and death
- Sex-ratio
Select the correct option from the given options:
With the help of neatly labelled diagrams, explain the different types of age pyramids of human population.
