Lakhmir Singh solutions for बायोलॉजी [अंग्रेजी] कक्षा १० आईसीएसई chapter 14 - Population [Latest edition]

True or False.

Population is distributed evenly throughout the world.

True or False.

The main cause of increase in India's population is low birth rate.

True or False.

Early marriage is one of the factors responsible for population growth.

______ is the ratio of birth to death within a population.

______ is the science of population.

______ is the complete study of human population after every 10 years.

If in an area, birth rate is 45 per thousand and death rate is 25 per thousand, what would be the natural growth rate?

Which one of the following is the main reason for rapid increase in population of India?

1. When do we celebrate World Population Day?
2. Who declared this day?
3. Write when it first started and what is the main aim to celebrate this day.
4. Do we celebrate this day in India or in your school? Write your views on it.

Give One Word Answer:

Record of group of organisms or people present in a country.

The biological/technical term for the number of persons living per square kilometre at any given time.

Give One Word Answer:

The number of people living in an area increase effecting the available resources of a country.

Number of live births in a year per total population × 1000

Factors which is not responsible for overpopulation in India

Economic depression, low income and unemployment are reasons for ______.

True or False.

Large families do not have difficulties in finding housing, giving food and educating their children.

True or False.

Urbanisation and job availability has made people move from rural areas to urban cities causing increase in population density.

True or False.

Indian government has taken many initiatives to bring down the country's population.

True or False.

Social marketing has not helped in educating public on overpopulation effects.

______ is the method to remove unwanted foetus from the mother's body.

The family planning symbol is ______.

______ in males and ______ in females are used to prevent sperms to fertilise the ovum.

To stop ovulation in females, doctors prescribed ______ pills.

True or False.

Vasectomy is a surgical family planning method done in females.

True or False.

Rhythm method is considered not a reliable and safe method of family planning.

True or False.

Educating and creating awareness through several mediums do not have any impact on family planning.

True or False.

India has 25% of the world's population.

True or False.

Density of population is low in India.

True or False.

India ranks 1st in the world in terms of population.

True or False.

There has been positive growth rate of population since 1921.

True or False.

Demography is the study of the workings of city life.

______ is an intrauterine device inserted in the female body to stop implantation.

______ should be imparted to young teenagers to make them know their body and be aware of other consequences.

Due to ______ and ______ degradation, people migrate to urban areas in search of work and better life.

______ revolutions are responsible for growth in population in this world.

The advancement of ______ science, many illness have been cured and ______ rate has reduced resulting in population explosion.

Match the Following:

Give One Word Answer:

Human population studied through data collection and analysis.

Give One Word Answer:

Number of live births per 1,000 people per year.

Give One Word Answer:

A surgical method of fertility control in human males.

Give One Word Answer:

Percentage increase in the growth of population per year.

Give One Word Answer:

Ten years record of human population in a country.

Give One Word Answer:

Method to control number of children per family in order to reduce a country's population.

According to the census 2001, which was the largest state of India demographically?

The density of population in India is defined as ______.

What is the main reason behind the faster population growth in India?

According to census 2011, which union territory records the highest density?

Which of the following is called the biggest leap forward in the history of Indian population?

Sex ratio in India is ______.

In general it is observed that the rate of population growth has been ______ in the densely populated areas compared to sparsely populated areas.

The Indian state with lowest sex ratio is ______.

The birth rate measures the birth during a year per ______.

Find the name of the state which has the lowest density.

Surgical method of sterilisation in a woman involves cutting and tying of ______.

What is a census?

State two reasons for the increase in birth rate in India.

What is MTP?

What will be the world's population by the year 2027 and 2046?

Write the methods used for family planning.

What do you understand by the slogan "Hum do, Humare do"?

When was the National Population Policy formulated in India?

When was family planning campaign first started in a big way in India?

Define the terms Rate of growth of population.

Define the following term:

Population

Explain the Term: Population density

Give suitable biological reasons for the following statement:

The birth rate in India is very high. 

Differentiate between the Following;

Population and Population density

Distinguish between Birth and Death Rate.

Differentiate between the Following:

Growth rate and Natural growth rate

Differentiate between tubectomy and vasectomy.

List any four reasons for population explosion in India.

Compare India's population with that of the world population.

What is the effect of overpopulation in India?

How does population growth influence urbanisation and environmental degradation?

Write the methods used for family planning.

Suggest measures to check population growth rate in India.

Look at the figure and answer the following questions:

1. What method is being followed?
2. What is the benefit of this method?
3. What are 1 and 2?
4. State the function of 1 and 2.

Answer the following questions by observing the figure.

1. What does the symbol denote?
2. What kind of awareness does the government want to create by this symbol?
3. Has this awareness benefitted India's population? How? Give details.

Observe the graph and answer the following questions:

1. What do you understand from the graph?
2. China’s population is more than India’s. How has it been able to reduce its growth than India? Justify by giving examples.

Collect the following information from your vicinity for about 10–15 households:

1. Name of the person interviewed ______.
2. Age ______ Years ______
3. Academic Qualification ______
4. Number of persons earning in the family ______
5. Total no. of members M ______ F ______
6. Members of family in the age groups
   1. Up to 14 years ______
   2. 15 years to 60 years ______
   3. More than 60 years ______
7. Based on the data collected above, compute and analyse:
   1. Sex-ratio ______
   2. Dependency ratio ______
8. Children below 14 years ______ and its percentage ______
9. Adult more than 60 years ______ and its percentage ______
10. Make a table containing data you have collected.
11. Compare data in your table with that of your classmates. Check:
    1. Population of the area
    2. Density of population
12. The Economic Times has published data as follows:

What do you understand from the data?

ACROSS

1. Lowest portion of the brain that controls the activities of the internal organs
2. It is the statistical study of human population
3. Type of blood vessel that conduct the blood from the tissues to the heart
4. A relaxation phase of a chamber of the heart
5. The white outer layer of the eyeball
6. Secretion of adrenal gland that helps to maintain Na/K concentration in blood
7. Fertilised cell formed after the union of male and female gametes
8. A contraction phase of a chamber of the heart
9. A small sac-like structure containing the ovum
10. Number of deaths in one period of time or in one place
11. The fluid-filled space inside the blastocyst
12. Process of formation of female gametes
13. The structural and functional unit of the kidney

DOWN

1. Disease caused by the hyposcretion of thyroid gland in adults
2. A disease caused by increase or decrease of insulin level in the blood
3. Process of absorption of the usable substances from the glomerular filtrate back into the circulation
4. A bundle of fibres of different neurons
5. Part that is body's central support structure
6. Process of regulating the concentration and osmotic pressure of the blood
7. A condition due to lack of iodine in the diet
8. A tuft of blood capillaries formed from the afferent arteriole