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[A] : The age-sex structure of human pop...

[A] : The age-sex structure of human population in countries like France and Germany gives a steep pyramid .
[R] : In countries like Sudan and India the population is increasing at a rapid rate .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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The correct Answer is:
A
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Assertion : Age sex structure of human population in countries like France and Germany gives a steep pytamid. Reason : In countries like Sudan and India, the population is increasing at a rapid rate.

Assertion: Age, sex, structure of human popuJation in France and Sweden forms a steep pyramid. Reason: To countries like Sudan and Lndia, the population is increasing at a rapid rate.

Assertion : The rate at which a population can be expected to grow in the future can be assessed graphically by means ofa population pyrmid. Reason : A triangular population pyramid is characteristics of a country whose population is stable, neither growing nor shrinking.

If the population of country double in 50 years, in how many years will it triple under the assumption that the rate of increase is proportional to the number of inhabitants.

Various age pyramids (P-R) for human population are shown below. Select the option with correct identification.

A country with a high rate of population growth took measures to reduce it. The figure below shows are sex pyramids of populations. A and B twenty years apart. Select the correct interpretation about them. Interpretations

The population of a country increases at a rate proportional to the number of inhabitants. f is the population which doubles in 30 years, then the population will triple in approximately. (a) 30 years (b) 45 years (c) 48 years (d) 54 years

The population of a certain is known to increase at a rate proportional to the number of people presently living in the country. If after two years the population has doubled, and after three years the population is 20,000 estimates the number of people initially living in the country.

Which of the following can be taken as characteristic demographic features of the development countries? (a) High fertility rate (b) Rapidly rising mortality rate. (c ) Very young age distribution. (d) Rapid population growth ( e) Rapidly falling mortality rate (f) Very old age distribution.

[A]: Since 1960 s, there is a dramatic increase in human population growth rate. [R]: Infant and child mortality rate has been reduced

TRUEMEN BIOLOGY ENGLISH-Applications of Biology -ASSERTION AND REASON
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  2. [A]: Winged bean is widely cultivated throughout India. [R]: The ...

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  4. [A]: Decrease in mortality would result in de- creased population grow...

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  5. Assertion. Death is regarded as the most regulatory process on earth. ...

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  6. [A]: The ideas of Thomas Malthus are more applicable today. [R]: ...

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  7. [A]: Since 1960 s, there is a dramatic increase in human population gr...

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  8. [A]: Oral contraceptive pills are meant for family planning purpose. ...

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  9. [A]: Environment resistance does not limit population growth. [R]...

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  10. [A]: Growth curve is the graphic representation of the total growth ag...

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  11. [A]: Demography is the study of human popu- lation growth & production...

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  13. Assertion (A): Organ transplantation patients are given immunosuppress...

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  15. Assertion: Senescence is the time when age associated defects are mani...

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  16. Assertion: In recombinant DNA technology, human genes are often transf...

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  17. Assertion : Agrobacterium tumefaciens is popular in genetic engineerin...

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  18. [A]: Typhoid carriers may be cured by remov- ing their spleen. [R...

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  20. [A] : A blood dialyser is an artificial kidney which can sustain kidne...

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