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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
How does an age pyramid for human population at given point of time helps the policy-makers in planning for future.
What is an age-pyramid?
What is reproductive fitness? Explain it with the help of an example.
Animals that can move from fresh water to sea called as ________.
Nutrient enrichment of water body result.
Age distribution in a population can influence
Which of the following would necessarily decrease the density of a population in a given habitat?
List any four characters that are employed in human population census.
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.
