The shape of the pyramids reflects the growth status of the population. Identify the type of age pyramid represented below for human population.
- Ascending
- Expanding
- Stable
- Declining
The Correct Option is D
Approach Solution - 1
The pyramid shown represents a (D) Declining population.
Expanding: Expanding populations have a wide base (lots of births) and progressively narrower tiers. This represents a high birth rate and lower life expectancy.
Stable: Stable populations have relatively even tiers, with only a slight tapering towards the top. Birth and death rates are relatively balanced. This is what the image depicts.
Declining: Declining populations have a narrow base (few births) and wider tiers in the older age groups. This represents a low birth rate and a higher life expectancy.
Approach Solution -2
A population pyramid is a graphical representation of the age and sex distribution of a population. It typically shows the proportion of males and females in various age groups. Population pyramids are used by demographers and policymakers to understand the demographic structure of a population and to assess social and economic trends.
The pyramid shown represents a (D) Declining population.
Top Questions on Population dynamics
- Consider a large population of a finch species, where both small and big beak sizes are advantageous, and an intermediate beak size is maladaptive. Over a period of 10 years, which one of the following evolutionary processes is most likely to operate on the beak size of this finch population?
- GATE XL - 2024
- Zoology
- Population dynamics
- Differentiate between grazing food chain and detritus food chain.
- CBSE CLASS XII - 2024
- Biology
- Population dynamics
- What is a vaccine? Write the basis on which it acts when administered in the body.
- CBSE CLASS XII - 2024
- Biology
- Population dynamics
- Average natality rate in our village is 25, average mortality is 24, immigration 2 and emigration 3 and the net increase M population is:
- KCET - 2022
- Biology
- Population dynamics
- Population size keeps changing depending on different factor/s such as
- KCET - 2021
- Biology
- Population dynamics
Questions Asked in KCET exam
- Three polaroid sheets are co-axially placed as indicated in the diagram. Pass axes of the polaroids 2 and 3 make 30° and 90° with pass axes of polaroid sheet 1. If \( I_1 \) is the intensity of the incident unpolarised light entering sheet 1, the intensity of the emergent light through sheet 3 is
- KCET - 2024
- Polarization
- 8.8 g of monohydric alcohol reacts with ethyl magnesium iodide, releasing 2240 $cm^3$ of ethane at STP. This monohydric alcohol forms a carbonyl compound that answers Tollen’s test. The alcohol is:
- KCET - 2024
- Alcohols, Phenols and Ethers
- Let $\vec{a}$ and $\vec{b}$ be two unit vectors and $\theta$ is the angle between them. Then $\vec{a} + \vec{b}$ is a unit vector if:
- KCET - 2024
- Vectors
- The vectors $\overrightarrow{AB} = 3\hat{i} + 4\hat{k}$ and $\overrightarrow{AC} = 5\hat{i} - 2\hat{j} + 4\hat{k}$ are the sides of a $\triangle ABC$. The length of the median through $A$ is:
- KCET - 2024
- Vectors
- The solution of $e^{\frac{dy}{dx}} = x + 1, \, y(0) = 3$ is:
- KCET - 2024
- Integration