Population ICSE Class-10 Concise Selina Biology Solutions

Chapter-15 The Increasing Numbers and Rising Problems

Population ICSE Class-10 Concise Selina Biology Solutions Chapter-15. We Provide Step by Step Answer of Progress Check , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type Questions and Structured / Applications / Skill Type Questions of Exercise-15 PopulationThe Increasing Numbers and Rising Problems ICSE Class-10 . Visit official Website CISCE  for detail information about ICSE Board Class-10.

Population ICSE Class-10 Concise Selina Biology Solutions Chapter-15 

(The Increasing Numbers and Rising Problems)


-: Select Topics :-

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A.MULTIPLE CHOICE TYPE 

B. VERY SHORT ANSWER TYPE

C SHORT ANSWER TYPE

D LONG ANSWER TYPE

E. STRUCTURED /APPLICATION / SKILL TYPE


Chapter-15 “Population” Selina Biology Solution for ICSE Class 10 

A.MULTIPLE CHOICE TYPE 

Question 1

What was directly responsible for the rapid rise of world population in the twentieth century?

(a) Increased food production

(b) Better transport facilities

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(c) Better education and job prospects

(d) Use of antibiotics and prophylactic vaccinations

Answer 1

(d) Use of antibiotics and prophylactic vaccinations

Question 2

Birth rate is the number of live births

(a) Per 1000 people per year

(b) Per 100 people per decade

(c) Per 1000 people per decade

(d) Per 100 people per year

Answer 2

(a) Per 1000 people per year


Concise Biology Solution of Chapter-15 “Population” for ICSE Class 10

B. VERY SHORT ANSWER TYPE

Question 1

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Give the technical term for statistical study of human population of a region.

Answer 1

Demography

Question 2

Name two surgical techniques (one for the human male and another for the human female) that can be used to prevent pregnancy.

Answer 2

(i) Tubectomy (For Female)

(ii) Vasectomy (For Male)


 Population, Selina Biology Solution for ICSE Class 10 Chapter-15

C. SHORT ANSWER TYPE

Question 1 

Write true (T) and false (F).

(a) Vasectomy is the surgical method of sterilisation in human males …………………………………

(b) Tubectomy is the placing of a diaphragm on the cervix …………………………………..

Answer 1

(a) True

(b) False

Question 2

What is the total world population at present?

Answer 2

It is approximately 7 billion.

Question 3

Define the following terms:

(a) Birth rate

(b) Death rate

(c) Population density

(d) Exhaustible resource

(e) Rate of growth of population

Answer 3

(a) Birth Rate: It is the number of live births per 1000 people of population per year.

(b) Death Rate: It is the number of deaths per 1000 of population per year.

(c) Population density: It is the number of individuals per square kilometre (Km2) at any given time.

(d) Exhaustible resource: Exhaustible resources are the once which are perished by the prolonged us and they can never be renewed or replaced.

(e) Rate of growth of population: It is the difference between the birth rate and the death rate. As long as the birth rate exceeds the death rate, the population grows. If the birth rate is lower than the death rate, the population declines.

Question 4

Mention which of the following statements are true or false. Give reason in support of your answer.

(a) Cow was the first domesticated animal.

(b) Rapidly growing industries favoured population rise.

(c) Present human population growth is following arithmatic progression.

(d) Birthrate (natality) to the number of live births per hundred people of population per decade.

(e) Tubectomy is a popular surgical method of contraception in human males.

Answer 4

(a) False.

Dog was the first domesticated animal.

(b) True.

Rapidly growing industries made human life more and more comfortable, with greater opportunities of jobs and with more production of food. All this favoured population rise.

(c) False.

Present human population growth is following geometrical progression.

(d) False.

Birth Rate (natality) is the number of live births per 1000 people of population per year.

(e) False.

Vasectomy is the surgical method of contraception in human males while tubectomy is the surgical method used in females.

Question 5

What is the present rate of growth of population of the world and of our own country?

Answer 5

The rate of growth of population of the world is 1.092% (this rate results in about 145 net additions to the worldwide population every minute or 2.4 every second {2011 estimates}) and for India is 1.344%.

Question 6

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

Answer 6

By law the minimum age is 21 years for boys and 18 years for girls.

Question 7

Give two advantages of a small family.

Answer 7

Two advantages of small family are:

(a) Parents can give more attention to their children.

(b) Small family helps every country in controlling the growth of population.

Question 8

Mention two reasons for the rapid increase of population in India.

Answer 8

(a) Illiteracy:

Most of the rural population which forms the bulk of our society is still illiterate, ignorant and superstitious.

They also do not know the functioning of the human reproductive system.

(b) Traditional Beliefs:

Among the people from lower strata of the society, children are regarded as a gift of God and a sign of prosperity.

Therefore, they make no effort to avoid pregnancy.

Question 9

Some great author has said that a population explosion is far more dangerous than an atomic explosion. Justify his statement?

Answer 9

Population growth is not the only threat humanity is facing, but it will be a major contributor to the crises that await us and the planet in the coming century. Overpopulating the planet puts us all at risk of extreme environmental and social consequences that we are beginning to witness today. The extreme growth in human population is mortally taxing the Earth and its resources. Each individual person has a unique impact on the planet’s environment. Some people may be relatively less damaging than others, but no living individual is without an ecological footprint. In other words, each person needs basic resources and almost all people aspire to utilize significantly more resources than are required by their basic needs.

 As a result, the Earth is attempting to impose its own checks on human population. We can witness these “checks” in the form of widespread disease and the emergence of new disease strains, food and water shortages, poor harvests and violent and destructive weather caused by climate change. While it should be obvious that the Earth is a finite sphere and cannot endure infinite growth by any single species, we should also remember that Earth’s current web-of-life is the result of billions of years of complex evolution.

Question 10

Explain briefly the relationship between poverty and population and how one affects the other.

Answer 10

Poverty and population have been closely linked ever since the world faced changes due to the major revolutions. Hence it  has its own effects on the population and vice versa. Therefore Poverty prevails because of illiteracy and traditional beliefs in the economically weaker strata. Since illiteracy and traditional beliefs prevail the people from this stratum, they regard children as gift of God and a sign of prosperity.

They consider children to be helping hands in increasing the family income, hence they keep producing more children forgetting that their current situation would do no good for the children and they would add more to this already overburdened poverty strata. Hence, the population keeps on rising and so does poverty. As the population increases the quality of life goes down.

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