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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
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
If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?
Define population
Define the Carrying capacity.
Give an account of population regulation.
Label the three tiers 1, 2, 3 given in the above age pyramid.
List any four characters that are employed in human population census.
The following diagrams are the age pyramids of different populations. Comment on the status of these populations.
Given below is the Age Pyramid of the population in one of the states in India as per 2011 census. It depicts the male population on the left-hand side, female population on the right-hand side, newborns towards the base and gradually increasing age groups as we move from base to the top, with the oldest population at the top. Study this pyramid and comment upon the appropriateness of the Assertion and the Reason.
Percentage to the total population
Assertion: It is a stable population.
Reason: The pre-reproductive and reproductive individuals are almost in equal numbers and the post-reproductive individuals are relatively fewer.
Write the best method to measure the population density of a single Banyan tree in comparison to Partlzenium weeds in a forest by an ecologist. Explain and justify your answer.
