Structured Application Questions on Population Class 10 Concise ICSE Biology Selina Solutions Ch-15 Population- The Increasing Numbers and Rising Problems.. Visit official website CISCE for detail information about ICSE Board Class-10 Biology.
Structured Application Questions on Population Class 10 Concise ICSE Biology Selina Solutions Ch-15 Population- The Increasing Numbers and Rising Problems
| Board | ICSE |
| Subject | Biology |
| Class | 10 |
| Book | Selina Concise |
| Chapter-15 | Population- The Increasing Numbers and Rising Problems |
| Topics | Solutions of Structured/ Application/ Skill Ans Questions |
Structured/ Application/ Skill Type Questions on Population with Solutions
Class 10 Concise ICSE Biology Selina Solutions Ch-15 Population – The Increasing Numbers and Rising Problems
Que-1: Given below are hypothetical figures in regard to population (in crores) of two countries A and B during the last three decades.
| Country | 1971 | 1981 | 1991 |
| A | 6.4 | 9.6 | 10.6 |
| B | 15.7 | 15.7 | 15.3 |
Fill in the blanks:
(a) Rate of growth of population of country ……………… has declined between years ……………. and …………….
(b) The country ………………. shows negative population growth between years ………………. and ……………….
(c) The country ……………….. shows zero population growth between years …………….. and ………………..
Ans:
(a) B; 1981; 1991.
(b) B; 1981; 1991.
(c) B; 1971; 1981.
Que-2: Observe the diagrams (A) and (B) given below and answer the following questions.
(a) Label the parts 1 to 5.
(b) What does figure A depict?
(c) What does figure B depict?
(d) Comment on P and Q.
(e) Mention one function each of part 2 and 4.
Ans:
(a) The parts 1 to 5 are labelled below:
- 1 : Sperm duct / Vas deferens
- 2 : Testis / Seminiferous tubule
- 3 : Oviduct / Fallopian tube
- 4 : Uterus
- 5 : Ovary
(b) Figure A depicts Vasectomy
(c) Figure B depicts Tubectomy
(d) P represents the cut portion of the vas deferens, while Q represents the cut portion of the oviduct. In males, a small section of the vas deferens is removed and the remaining ends are tied during vasectomy. In females, a small part of the oviduct is cut and the ends are tied during tubectomy. Both procedures serve as permanent methods of contraception.
(e) One function each of part 2 and 4 is mentioned below:
- Part 2 (Testes): They produce the sperm cells or sperms by the process of spermatogenesis.
- Part 4 (Uterus): It’s function is to nourish and house a fertilized egg until the fetus, or offspring, is ready to be delivered.
Que-3: Kishan and Malti are married and have three children. They have decided not to have any more children and are considering permanent surgical methods of contraception.
(a) Which surgical method can Kishan undergo ?
(b) Can Malti also undergo some sort of a permanent surgical method like Kishan as answered by you in (a)?
(c) Out of (a) and (b), explain why (a) is preferred over (b) when considering permanent contraception ?
Ans:
(a) Vasectomy
(b) Yes, Tubectomy
(c) Vasectomy is preferred over tubectomy due to the following reasons:
- Simple procedure
- Lower cost
- High effectiveness
- Faster recovery and lower risk
Que-4: Rising population is one of the major issues that India is facing currently. It has adversely impacted the environment as well as food production capacity. Answer the questions that follow :
(a) Mention two main factors responsible for population explosion.
(b) ‘It is the need of the hour to adopt population control measures. Give two reasons to substantiate the above statement.
(c) Mention two Intra Uterine Devices (IUDs) that are commonly used for contraception in India.
Ans:
(a) Two factors responsible for population explosion are:
- Desire for a male child.
- Illiteracy and Lack of awareness about birth control measures.
(b) Two reasons to adopt population control measures are:
- Increased population will put pressure on natural resources like land, minerals, wood, fuel, etc.
- If population control measures are not adopted, per capita income will continue to come down.
(c) Lippe’s loop and Copper-T
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