NCERT Solutions for Class 12 Science Biology Chapter 4 Reproductive Health are provided here with simple step-by-step explanations. These solutions for Reproductive Health are extremely popular among Class 12 Science students for Biology Reproductive Health Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the NCERT Book of Class 12 Science Biology Chapter 4 are provided here for you for free. You will also love the ad-free experience on Meritnation’s NCERT Solutions. All NCERT Solutions for class Class 12 Science Biology are prepared by experts and are 100% accurate.
Page No 24:
Question 1:
The method of directly injecting a sperm into ovum in Assisted Reproductive Technology is called:
a. GIFT
b. ZIFT
c. ICSI
d. ET
Answer:
ans
Page No 24:
Question 2:
Increased IMR and decreased MMR in a population will:
a. Cause rapid increase in growth rate
b. Result in decline in growth rate
c. Not cause significant change in growth rate
d. Result in an explosive population
Answer:
ans
Page No 24:
Question 3:
Intensely lactating mothers do not generally conceive due to the:
a. Suppression of gonadotropins
b. Hyper secretion of gonadotropins
c. Suppression of gametic transport
d. Suppression of fertilisation
Answer:
ans
Page No 24:
Question 4:
Sterilisation techniques are generally fool proof methods of contraception with least side effects. Yet, this is the last option for the couples because:
i. It is almost irreversible
ii. Of the misconception that it will reduce sexual urge
iii. It is a surgical procedure
iv. Of lack of sufficient facilities in many parts of the country
Choose the correct option:
(a) i and iii (b) ii and iii (c) ii and iv (d) i, ii, iii and iv
Answer:
ans
Page No 25:
Question 5:
A national level approach to build up a reproductively healthy society was taken up in our country in:
a. 1950s
b. 1960s
c. 1980s
d. 1990s
Answer:
ans
Page No 25:
Question 6:
Emergency contraceptives are effective if used within:
a. 72 hrs of coitus
b. 72 hrs of ovulation
c. 72 hrs of menstruation
d. 72 hrs of implantation
Answer:
ans
Page No 25:
Question 7:
Choose the right one among the statements given below:
a. IUDs are generally inserted by the user herself
b. IUDs increase phagocytosis reaction in the uterus
c. IUDs suppress gametogenesis
d. IUDs once inserted need not be replaced
Answer:
ans
Page No 25:
Question 8:
Following statements are given regarding MTP. Choose the correct options given below:
i. MTPs are generally advised during first trimester
ii. MTPs are used as a contraceptive method
iii. MTPs are always surgical
iv. MTPs require the assistance of qualified medical personnel
(a) ii and iii (b) ii and iii (c) i and iv (d) i and ii
Answer:
ans
Page No 25:
Question 9:
From the sexually transmitted diseases mentioned below, identify the one which does not specifically affect the sex organs:
a. Syphilis
b. AIDS
c. Gonorrhea
d. Genital warts
Answer:
ans
Page No 25:
Question 10:
Condoms are one of the most popular contraceptives becuase of the following reasons:
a. These are effective barriers for insemination
b. They do not interfere with coital act
c. These help in reducing the risk of STDs
d. All of the above
Answer:
ans
Page No 26:
Question 11:
Choose the correct statement regarding the ZIFT procedure:
a. Ova collected from a female donor are transferred to the fallopian tube to facilitate zygote formation.
b. Zygote is collected from a female donor and transferred to the fallopian tube
c. Zygote is collected from a female donor and transferred to the uterus
d. Ova collected from a female donor and transferrerd to the uterus
Answer:
ans
Page No 26:
Question 12:
The correct surgical procedure as a contraceptive method is:
a. Ovariectomy
b. Hysterectomy
c. Vasectomy
d. Castration
Answer:
ans
Page No 26:
Question 13:
Diaphragms are contraceptive devices used by the females. Choose the correct option from the statements given below:
i. They are introduced into the uterus
ii. They are placed to cover the cervical region
iii. They act as physical barriers for sperm entry
iv. They act as spermicidal agents
(a) i and ii, (b) i and iii, (c) ii and iii, (d) iii & iv
Answer:
ans
Page No 26:
Question 1:
Reproductive health refers only to healthy reproductive functions. Comment.
Answer:
ans
Page No 26:
Question 2:
Comment on the Reproductive and Child Health Care programme of the government to improve the reproductive health of the people.
Answer:
ans
Page No 26:
Question 3:
The present population growth rate in India is alarming. Suggest ways to check it.
Answer:
ans
Page No 26:
Question 4:
STDs can be considered as self-invited diseases. Comment.
Answer:
ans
Page No 26:
Question 5:
Suggest the reproduction-related aspects in which counselling should be provided at the school level.
Answer:
ans
Page No 26:
Question 6:
Mention the primary aim of the “Assisted Reproductive Technology” (ART) programme.
Answer:
ans
Page No 26:
Question 7:
What is the significance of progesterone-estrogen combination as a contraceptive measure?
Answer:
ans
Page No 27:
Question 8:
Strict conditions are to be followed in medical termination of pregnancy (MTP) procedures. Mention two reasons.
Answer:
ans
Page No 27:
Question 9:
Males in whom testes fail to descend to the scrotum are generally infertile. Why?
Answer:
ans
Page No 27:
Question 10:
Mention two advantages of lactational amenorrhea as a contraceptive method.
Answer:
ans
Page No 27:
Question 1:
What are the Assisted Reproductive Techniques practised to help infertile couples? Describe any three techniques.
Answer:
ans
Page No 27:
Question 2:
Discuss the mode of action and advantages/disadvantages of hormonal contraceptives.
Answer:
ans
Page No 27:
Question 3:
STDs are a threat to reproductive health. Describe any two such diseases and suggest preventive measures.
Answer:
ans
Page No 27:
Question 4:
What are the probable factors that contributed to population explosion in India?
Answer:
ans
Page No 27:
Question 5:
Briefly explain IVFand ET What are the conditions in which these methods are advised?
Answer:
ans
Page No 27:
Question 6:
What are the advantages of natural methods of contraception over artificial methods?
Answer:
ans
Page No 27:
Question 7:
What are the conditions in which medical termination of pregnancy is advised?
Answer:
ans
Page No 27:
Question 8:
Comment on the essential features required for an ideal contraceptive.
Answer:
ans
Page No 27:
Question 9:
All reproductive tract infections RTIs are STDs, but all STDs are not RTIs. Justify with example.
Answer:
ans
Page No 28:
Question 4:
Do you justify the statutory ban on aminocentesis in our country? Give reasons.
Answer:
ans
Page No 28:
Question 5:
Enumerate and describe any five reasons for introducing sex education to school-going children.
Answer:
ans
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