Match List - I with List - II.List-I List-II (a) Vaults (i) Entry of sperm through Cervix is blocked (b) IUDs (ii) Removal of Vas deferens (c) Vasectomy (iii) Phagocytosis of sperms within the Uterus (d) Tubectomy (iv) Removal of fallopian tube
Choose the correct answer from the options given below.
List-I | List-II | ||
| (a) | Vaults | (i) | Entry of sperm through Cervix is blocked |
| (b) | IUDs | (ii) | Removal of Vas deferens |
| (c) | Vasectomy | (iii) | Phagocytosis of sperms within the Uterus |
| (d) | Tubectomy | (iv) | Removal of fallopian tube |
(iii) (i) (iv) (ii)
(iv) (ii) (i) (iii)
(i) (iii) (ii) (iv)
(ii) (iv) (iii) (i)
The Correct Option is C
Solution and Explanation
To solve this question, we need to correctly match the items from List-I with those in List-II based on their descriptions and functions related to contraception and sterilization in biological terms. Let's go through each pair and match them appropriately:
- Vaults: Vaults are barrier methods used to block the entry of sperm into the uterus. Therefore, these are associated with List-II item (i) Entry of sperm through Cervix is blocked.
- IUDs (Intrauterine Devices): IUDs are devices that prevent pregnancy by various mechanisms, including the phagocytosis of sperms within the uterus. This corresponds to (iii) Phagocytosis of sperms within the Uterus.
- Vasectomy: It is a surgical procedure involving the cutting or blocking of the vas deferens to prevent sperm from entering the ejaculate. Hence, it matches with (ii) Removal of Vas deferens.
- Tubectomy: This is a surgical procedure for female sterilization involving the removal or blocking of the fallopian tubes to prevent eggs from reaching the uterus. This matches with (iv) Removal of fallopian tube.
The correct matches are:
- (a) Vaults - (i) Entry of sperm through Cervix is blocked
- (b) IUDs - (iii) Phagocytosis of sperms within the Uterus
- (c) Vasectomy - (ii) Removal of Vas deferens
- (d) Tubectomy - (iv) Removal of fallopian tube
Therefore, the correct option that matches this pairing is (i) (iii) (ii) (iv).
Top Questions on Reproductive Health – Problems And Strategies
- List two reasons that make copper releasing IUDs as effective contraceptives.
- CBSE CLASS XII - 2025
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Student to attempt either option-(A) or (B):
(A) Study the given diagram showing the sectional view of a seminiferous tubule.
Answer the following questions:- [(i)] Label A, B, C and D in the figure.
- [(ii)] What will be the number of chromosomes in secondary spermatocyte and spermatid respectively?
- [(iii)] Explain the terms — Spermiogenesis and Spermiation.
OR
(B) Study the figures given below showing initial stages in the formation of female gametophyte and answer the questions that follow.
- [(i)] Identify (P) and (Q).
- [(ii)]
- [I.] What kind of division does cell (P) undergo to form (Q)?
- [II.] How many (Q) cells form the embryo sac? What is the name given to such kind of development?
- [III.] How many free nuclear mitotic divisions will the functional megaspore undergo to form the embryo sac?
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- A village health worker was taking a session with women. She tells them that one has to be careful while using oral pills as a method of birth control. Wrong usage can actually promote conception.
(A) Analyse the statement — oral pills need careful usage, as wrong usage can promote conception. Compare merits and demerits of using oral pills and surgical methods of birth control.
(B) Village women are confused as to how a thin metallic copper loop can prevent pregnancy. Explain the mode of action of IUDs. Give two points.- CBSE CLASS XII - 2025
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(A) “A fully developed foetus initiates its delivery from the mother’s womb.” Explain.
OR
(B) Give reasons for the following:- Why can a woman generally not conceive a child after 50 years of age?
- Polar bodies are formed during oogenesis and not during spermatogenesis.
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Concepts Used:
Population Explosion
It refers to the rapid increase in the population of an area among human beings. Furthermore, it is a situation where the economy is not capable of coping with the increasing demand of its population. Population explosion refers to the number of people that live in an area. It is a major issue for developing countries. Also, the government is not taking proper measures to control this problem
Causes of Population Explosion:
The cause of the population explosion includes many factors and reasons. These includes:
- Increase in the birth rate
- A decrease in infant mortality rate
- The life expectancy growth
- High level of illiteracy