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What does the shape of the given age pyr...

What does the shape of the given age pyramids reflects about the growth status of the related population ?

A

`{:((i),(ii).),("Expanding","Stable"):}`

B

`{:((i),(ii).),("Stable","Declining"):}`

C

`{:((i),(ii).),("Expanding","Declining "):}`

D

`{:((i),(ii).),("Declining","Stable"):}`

Text Solution

Verified by Experts

The correct Answer is:
C
Triangular age pyramid has high proportion of preproductive individuals, moderate number of reproductive individuals and fewer post-reproductive individuals. It represents young or rapidly growing population. In urn-shaped age pyramid, the numbe of reproductive individuals is higher than the number of pre-reproductive individuals. It represents declining or diminishing population with negative growth. In bell-shaped age pyramid, the number of pre-reproductive and reproductive individuals is almost equal. Post reproductive individuals are comparatively fewer. It represents stable or stationary population, neither nor diminishing.
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Construct an age pyramid which reflects a stable growth status of human population.

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Knowledge Check

  • What does the shape of the given age pyramids (I to Ill) reflect about the growth status of populations?

    A
    `{:("I"," II"," III"),("Declining","Stable","Expanding"):}`
    B
    `{:("I"," II"," III"),("Stable","Expanding","Declining"):}`
    C
    `{:("I"," II"," III"),("Expanding","Stable","Declining"):}`
    D
    `{:("I"," II"," III"),("Declining","Expanding","Stable"):}`

  • What does the shape of the given age pyramids (A to C) reflect about the growth status of populations ?

    A
    `{:(A,B,C,D),("Declining","Stable","Expanding"):}`
    B
    `{:(A,B,C,D),("Stable","Expanding","Declining"):}`
    C
    `{:(A,B,C,D),("Expading","Stable","Declining"):}`
    D
    `{:(A,B,C,D),("Declining","Expanding","Stable"):}`

  • Assertion: For human populations, the age pyramids generally show age distribution of males and females in a combined diagram. Reason: The shape of age pyramid reflects the growth status of the populations, whether it is growing, stable or declining.

    A
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

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