HARD
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IMPORTANT
Earn 100
Given figures represent comparative age-sex pyramids for India for the years 1971 (figure A) and 1991 (figure B), over the 20-year period.
Study carefully the pyramids and select the correct statement regarding these.
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25% studentsanswered this correctly
Important Questions on Organisms and Populations
MEDIUM
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IMPORTANT
Age-sex structure of a population can be depicted in the following figures:
Study carefully the above age-sex pyramids and select the correct statements regarding these.
EASY
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IMPORTANT
In a given population of 2000 individuals, 80 births and 125 deaths were reported over a given period of time.
Which of the following graphs will correspond to it?
EASY
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IMPORTANT
The total number of individuals of a species per unit geographic area is called
MEDIUM
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IMPORTANT
In some cases, population density is measured in terms of biomass rather than in terms of numbers because
HARD
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IMPORTANT
Which of the following is not an example of using relative density to measure population density in a certain area?
MEDIUM
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For which of the following cases, population density can be easily determined by utilising a non-biological parameter?
HARD
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IMPORTANT
The given figure represents different factors affecting population density (N). If B = natality, D = mortality, E = emigration and I = immigration; then select the incorrect option regarding these.
MEDIUM
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IMPORTANT
The density of a population, in a given habitat, during a given period, fluctuates due to changes in certain basic processes. On this basis, fill up boxes A and B in the given flowchart with the correct option.
