Biology · Geography

Population Dynamics

978 Questions

Explore key concepts in population dynamics through these practice questions. The focus is on demographic transition models, population pyramids, and life history theory. These topics are useful for general studies and biology exams.

Demographic transition theoryPopulation pyramidsMathematical growth modelsLife history theory

Population Dynamics Questions

Multiple choice geography migration study of population migration and its impact migration : factors, types and consequences world population

Which of the following is the reason of increase in city crowd?

  1. High birth rate

  2. Migration from small town

  3. Increase in production

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The main reason of increase in city crowd is increase in migration from small town to city. Due to lack of production people migrate from their home town to city.

Multiple choice geography migration study of population migration and its impact migration : factors, types and consequences world population

Migrations change the number, distribution and composition of the population in ______.

  1. the area of departure

  2. The area of arrival

  3. Both the area of departure and arrival

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Migrations change the number, distribution and composition of population in both the areas of departure and the area of arrival.

Multiple choice geography migration study of population migration and its impact migration : factors, types and consequences world population

The general trend of international migration is from the _______.

  1. Developed to developed nations.

  2. Developing to developing nations.

  3. Less developed nations to more developed nations.

  4. Under developed nations to under developed nations.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The general trend of international migration is from the Less developed nations to more developed nations.

Multiple choice geography migration study of population migration and its impact migration : factors, types and consequences world population

Migrations change the number, distribution and composition ofthe population in _______.

  1. The area of departure

  2. The area of arrival

  3. Both the area of departure and arrival

  4. The area of all cities

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Population is a dynamic phenomenon. The numbers, distribution and composition of the population are constantly changing. This is the influence of the interaction of the three processes, namely-births, deaths and migrations. Migration is the movement of people across regions and territories. Migration can be internal (within the country) or international (between the countries). Internal migration does not change the size of the population, but influences the distribution of population within the nation. Migration plays a very significant role in changing the composition and distribution of population.

Multiple choice civics women empowerment womens economic empowerment dynamic of human development social development

The National Population Policy has set the goal of reducing Infant Mortality Rate (IMR) to _______ per thousand. 

  1. 10

  2. 20

  3. 30

  4. 40
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The National Population Policy (NPP) 2000 aimed to reduce the Infant Mortality Rate (IMR) to below 30 per 1000 live births. This was one of the key socio-demographic goals set for the year 2010.

Multiple choice population of karnataka geography

Why the growth rate of Karnataka's population is low?

  1. Birth control

  2. Literacy programmes

  3. Family planning programmes

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The relatively lower growth rate of Karnataka's population is attributed to a combination of factors, including successful family planning, increased literacy, and effective birth control measures.

Multiple choice population of karnataka geography

Which one of the following is not a reason for the lower population growth rate in Karnataka in comparison to the national growth rate?

  1. Success of the family welfare programme

  2. Birth control

  3. Literacy programmes

  4. Migration to other states
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Migration to other states is not a reason for the lower population growth rate in Karnataka compared to the national average; rather, factors like family welfare programs and literacy are the primary drivers.

Multiple choice maths direct proportion and inverse proportion inverse proportion rule of three types of proportions

Which of the following are in inverse proportion?

  1. The number of workers on a job and the time to complete the job.

  2. The time taken for a journey and the distance travelled in a uniform speed.

  3. Area of cultivated land and the crop harvested.

  4. The time taken for a fixed journey and the speed of the vehicle.

  5. The population of a country and the area of land per person.
Reveal answer Fill a bubble to check yourself
A,D,E Correct answer
Explanation

Inverse proportion is a relation between two quantities such that one increases in proportion as the other decreases i.e. If $x$ increases as $y$ decreases, $x \alpha \dfrac{1}{y}$ 


In option A, if the no. of workers are increased then the time required to do the job will decrease, likewise if no. of workers decrease, then time to do the same job will increase i.e. no. of workers and time to do the job are inversely proportional to each other.


Similarly is the option D and E where the time taken to complete the journey is inversely proportional to the speed of vehicle and population is inversely proportional to area of the land respectively, are both examples of inverse proportion. 

So, the answer is A, D, E.

Multiple choice geography no place for us? migration and its effects migration : factors, types and consequences migration

Immigration rate is calculated by ___________.

  1. IR= number of people coming into a country in a given area/midyear population multiplied by 1000

  2. IR= number of people going out of country in a given area/midyear population multiplied by 1000

  3. Both formulae can be used

  4. Both A and B are wrong
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The movement by people from one place to another with the intention of settling, permanently in the new location is called migration. People coming into your country from another country for the purpose of taking up residence is called immigration and the people are called immigrants. Immigration rate is calculated as:

IR= number of people coming into a country in a given area/midyear population multiplied by 1000.

Multiple choice mean and median mean maths assumed mean method assumed mean method of finding mean measure of central tendency

The most appropriate average to be used to compute the average rate of growth in population is:

  1. Arithmetic mean

  2. Median

  3. Geometric mean

  4. Harmonic mean
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In geometric mean method, the average percentage increase in the population is assumed to be constant decade to decade through which future population is worked out. Therefore, it is the most appropriate average to be used to compute the average rate of growth in population. 

Multiple choice biology plant growth growth rates and conditions for growth population ecology growth and development

In growth curve, maximum growth occurs during

  1. Lag phase

  2. Senescent phase

  3. Decline phase

  4. Exponential phase
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Bacterial growth is divided into four phases, namely lag phase, exponential phase, stationary phase and decline phase. In lag phase, there is very little or no bacterial growth. In this phase, bacteria are adjusting to the environment and synthesizing biochemicals and nutrients. In log phase, the number of bacterial cells doubles at an exponential rate. The maximum growth phase is the exponential phase. In stationary phase, the rate of cell death is equal to the rate of cell division. In decline phase, there is the decrease in the bacterial population due to lack of nutrients and high toxin concentration.
Thus, the correct answer is option D.
Multiple choice biology plant growth growth rates and conditions for growth population ecology growth and development

The maximum growth phase is

  1. Lag phase

  2. Steady phase

  3. Log phase

  4. Senescent phase
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Bacterial growth is divided into four phases, namely lag phase, log phase, stationary phase and death phase. In lag phase, there is very little or no bacterial growth. In this phase, bacteria are adjusting to environment and synthesizing biochemicals and nutrients. In log phase, the number of bacterial cells doubles at an exponential rate. The maximum growth phase is log phase. In stationary phase, the rate of cell death is equal to the rate of cell division. In death phase, there is decrease in the bacterial population due to lack of nutrients and high toxin concentration.
Thus, the correct answer is option C.
Multiple choice biology plant growth growth rates and conditions for growth population ecology growth and development

Growth curve indicates 

  1. A growth parameter at various intervals

  2. Absolute growth

  3. Absolute increase

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Growth curve has three different phases as :
1. Lag phase (where cell prepares for growth),
2. Log phase (where cell actually grows) and
3. Stationary phase (growth ceases).
Thus, these three phases indicates different parameters of growth at different levels. Hence, the correct answer is option (A) - 'A growth parameter at various interval'.