Population Explosion and It's Causes

Q.

List any three important characteristics of a population and explain

Q.

What are the suggested reasons for population explosion?

Q.

Write the formula of population density.

Q. In an age pyramid, the number of individuals of reproductive age is lesser than pre-reproductive but higher than post reproductive ones. The population is

1. Growing
2. Declining
3. Stable
4. Can not be predicted

Q. For what kind of characters would we breed animals? Would the selection of characters differ with the choice of animals?

Q. What is the minimum age for a girl to get married in India?

1. 16 years
2. 21 years
3. 18 years
4. 20 years

Q.

What are the suggested reasons for population explosion?

Q. Causes for increased population growth in India is/are.

1. decrease in death rate
2. all of these.
3. lack of education
4. increase in birth rate

Q.

Study of trends of human population is

1. Psychology

2. Kalography

3. Biography

4. Demography

Q. Population explosion is the main cause of pollution. Explain.

Q.

The number of live births per thousand persons in a year is termed as -

1. Death Rate

2. Population growth

3. None of these

4. Birth Rate

Q. A group of animals of a species that live in a well-defined geographical area, share or compete for similar resources, potentially interbreed and thus constitute a

1. Biome
2. Population
3. Ecosystem
4. Community

Q. What do we understand by the term ‘breed’?

Q. The population of the world in 2016 is about

1. 500 million
2. 100 million
3. 15.6 million
4. 7.4 million

Q.

List the attributes that populations but not individuals possess.

Q. The difference between birth rate and death rate is termed as ____________.

1. life rate
2. survival rate
3. birth ratio
4. none of the above

Q. If the population doubles in 3 years. What is the intrinsic rate of increase of the population?

1. 0.5
2. 0.66
3. 0.3
4. 0.33

Q.

In India, human populations heavily weighted towards the younger age groups as a result of______

1. Short life span of many individuals and low birth rate

2. Short lifespan of many individuals and high birth rate

3. Long life span of many individuals and low birth rate
   

4. None of these
   

Q. Write any two major reasons for the population explosion in India.

Q.

As of 2015, the world’s population has touched

1. 4 billion

2. 5 billion

3. 6 billion

4. 7 billion

Q.

What are the age restrictions for marriage for boys and girls in India?

Q.

Robert Malthus in his Essay on Population stated that

1. population grows at arithmetic rate and the food at the geometric rate

2. population grows at geometric rate and the food at the arithmetic rate

3. population grows at the same rate as food

4. population can grow indefinitely if enough food is provided

Q. Which of the following are the reasons for population explosion?
(i) Increased health facilities
(ii) Rapid increase in MMR
(iii) Rapid increase in IMR
(iv) Rapid decrease in MMR
(v) Decrease in number of people reaching reproductive age

1. (i) and (iv)
2. (iii) and (v)
3. (ii) and (iii)
4. (i) and (v)

Q.

Give an account for the high birth rate in India.

Q.

Main causes of population explosion are:

1. Improved technology
2. Famines
3. Wars
4. Large epidemics

Q. The impact of immigration on population density is:

1. Negative
2. Positive
3. Both positive and negative
4. Neutralized by natality

Q. Main cause of population explosion is ?

1. Decline in death rate
2. Decrease in birth rate
3. Improvement of agriculture
4. Better means of transport

Q. Which one of the following formulae correctly represents the relationship between population density and the processes that influence it?

1. $N_{t+1}=N_t+\left[\right(B+I)+(D+E\left)\right]$
2. $N_{t+1}=N_t+\left[\right(B+I)-(D+E\left)\right]$
3. $N_t=N_{t+1}-\left[\right(B+D)-(I+E\left)\right]$
4. $N_{t+1}=N_t+\left[\right(B+D)-(I+E\left)\right]$

Q.

Which of the following statements defines the density of population?

1. Number of persons living per unit area.

2. Number of persons living in a country.

3. Change in the number of inhabitants of a country during a specific period of time.

4. Absolute number of people added every year.

Q. Which among the following states is highly densely populated?

1. Delhi
2. Pondicherry
3. West Bengal
4. Chandigarh