Certain characteristic demographic features of developing countries are.
1. High fertility, high density, rapidly rising mortality rate and a very young age distribution.
2. High infant mortality, low fertility, uneven population growth and a very young age distribution.
3. High mortality, high density, uneven population growth and a very old age distribution.
4. High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution.

Subtopic:  Age Pyramid |
 73%
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What type of human population is represented by the following age pyramid?

1. Expanding population
2. Vanishing population
3. Stable population
4. Declining population

Subtopic:  Age Pyramid |
 80%
From NCERT
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Consider the following statements (A)-(D) each with one or two blanks:
 

(A) Bears go into ________ (1) _ during winter to ________ (2) _ cold weather.
(B) A conical age pyramid with a broad base represents _________ (3) human population.
(C) A wasp pollinating a fig flower is an example of ________ (4) _ .
(D) An area with high levels of species richness is known as _________ (5) .

Which of the following options, gives the correct fill-ups for the respective blank numbers from(1) to (5) in the statements?
 

1. (1) - hibernation, (2) - escape, (3) - expanding, (5) - hot spot
2. (3) - stable, (4) - commensalism, (5) - marsh
3. (1) - aestivation, (2) - escape, (3) - stable, (4) - mutualism
4. (3) - expanding, (4) - commensalism, (5) - biodiversity park
Subtopic:  Introduction to the Chapter | Response of Organisms to Abiotic Factors (OLD NCERT) | Population Interactions: Commensalism, Protocooperation & Mutualism | Age Pyramid |
 90%
From NCERT
AIPMT - 2011
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