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Question: Answered & Verified by Expert
The following diagrams are the age pyramids of different populations.



Select the CORRECT statements regarding the above:
BiologyOrganisms and PopulationsNEET
Options:
  • A A - It is a pyramid-shaped age pyramid indicating decreasing population growth.
  • B B - It is a bell-shaped pyramid indicating stable population.
  • C C - It is an urn-shaped pyramid indicating increased population growth.
  • D All statements are correct.
Solution:
2896 Upvotes Verified Answer
The correct answer is: B - It is a bell-shaped pyramid indicating stable population.
A-Age pyramid having higher population of pre-reproductive individuals, moderate number of reproductive individuals and low post-reproductive individual count forms the proper upright triangular shape. It represents growing population or expanding one.

C-If the count of reproductive population is higher than the pre-reproductive population, the age pyramid forms an urn shape. It represents declining or diminishing population with low natality.

B-For a bell-shaped age pyramid, the population of pre-reproductive and reproductive groups is almost equal. Post reproductive population is low. Such age pyramid shows stable or stationary population, neither growing nor diminishing.

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