Previous Year Biology NEET UG Entrance Exam MCQs and Answers
Question 1: Artificial insemination means:
- a) Introduction of the sperm of a healthy donor directly into the ovary
- b) Transfer of the sperm of a healthy donor to a test tube containing ova
- c) Transfer of sperm from the husband to a test tube containing ova
- d) Artificial introduction of the sperm of a healthy donor into the vagina
Answer: b) Transfer of the sperm of a healthy donor to a test tube containing ova
Question 2: One of the legal methods of birth control is:
- a) By premature ejaculation during coitus
- b) Abortion by taking an appropriate medicine
- c) By abstaining from coitus from days 10 to 17 of the menstrual cycle
- d) By having coitus at the time of daybreak
Answer: c) By abstaining from coitus from days 10 to 17 of the menstrual cycle
Question 3: Which of the following contraceptives makes the uterus unsuitable for implantation?
- a) CT
- b) Cu7
- c) Multiload 375
- d) Progestesert
Answer: b) Cu7
Question 4: Tubectomy is a method of sterilization in which:
- a) A small part of the fallopian tube is removed or tied up.
- b) Ovaries are removed surgically.
- c) A small part of the vas deferens is removed or tied up.
- d) The uterus is removed surgically.
Answer: a) A small part of the fallopian tube is removed or tied up.
Question 5: Which of the following is a hormone-releasing intrauterine device (IUD)?
- a) Multiload 375
- b) Cervical cap
- c) LNG-20
- d) Vault
Answer: a) Multiload 375
Question 6: Assisted reproductive technology (IVF involves the transfer of:
- a) Ovum into the fallopian tube.
- b) Zygote into the fallopian tube.
- c) Zygote into the uterus.
- d) Embryo with 16 blastomeres into the fallopian tube.
Answer: c) Zygote into the uterus.
Question 7: A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is:
- a) Germ cell internal fallopian transfer
- b) Gamete-inseminated fallopian transfer
- c) Gamete intra-fallopian transfer
- d) Gamete internal fertilization and transfer
Answer: c) Gamete intra-fallopian transfer
Question 8: Which of the following approaches does not define the action of contraception?
- a) Hormonal: prevents the entry of sperm; contraceptives prevent ovulation and fertilization.
- b) Vasectomy: prevents spermatogenesis.
- c) Barrier methods: prevent fertilization.
- d) Intrauterine: Increases phagocytosis of sperm; devices suppress sperm motility and fertilizing capacity of sperm.
Answer: d) Intrauterine: Increases phagocytosis of sperm; devices suppress sperm motility and fertilizing capacity of sperm.
Question 9: In the context of amniocentesis, which of the following statements is incorrect?
- a) It is usually done when a woman is between 14 and 16 weeks pregnant.
- b) It can be used for the detection of Down syndrome.
- c) It can be used for the detection of cleft palates.
- d) It is used for prenatal sex determination.
Answer: c) It can be used for the detection of cleft palates.
Question 10: Which of the following is a hormone-releasing IUD?
- a) Cu7
- b) LNG-20
- c) Lippes loop
- d) Multiload 375
Answer: b) LNG-20
Question 11: Which of the following is incorrect regarding vasectomy?
- a) Irreversible sterility
- b) No sperm occurs in the epididymis.
- c) Vasa deferentia is cut and tied.
- d) No sperm occurs in the seminal fluid.
Answer: d) No sperm occurs in seminal fluid.
Question 12: An embryo with more than 16 blastomeres formed due to in vitro fertilization is transferred into:
- a) Uterus
- b) Fimbriae
- c) Cervix
- d) Fallopian tube
Answer: a) Uterus
Question 13: In the case of a couple where the male has a very low sperm count, which technique will be suitable for fertilization?
- a) Intrauterine transfer
- b) Artificial insemination
- c) Intracytoplasmic sperm injection
- d) Gamete intracytoplasmic fallopian transfer
Answer: c) Intracytoplasmic sperm injection
Question 14: The function of copper ions in copper-releasing IUDs is:
- a) They inhibit ovulation.
- b) They inhibit gametogenesis.
- c) They make the uterus unsuitable for implantation.
- d) They suppress the sperm motility and fertilizing capacity of sperm.
Answer: c) They make the uterus unsuitable for implantation.
Question 15: Consider the statements given below regarding contraception and answer as directed thereafter:
- Medical termination of pregnancy (MTP) during the first trimester is generally safe.
- Generally, chances of conception are nil until the mother breastfeeds the infant for up to two years.
- Intrauterine devices like copper T are effective contraceptives.
- Contraception pills may be taken up to one week after coitus to prevent conception. Which two of the above statements are correct?
- a) a, c
- b) a, b
- c) b, c
- d) c, d
Answer: (a, c)
Question 16: In vitro fertilization is a technique that involves the transfer of which one of the following into the fallopian tube?
- a) Zygote only
- b) embryo only, up to 8-cell stage
- c) Either zygote or early embryo up to the 8-cell stage
- d) embryo of the 32-cell stage
Answer: c) Either zygote or early embryo up to 8-cell stage
Question 17: The permissible use of the technique of amniocentesis is for:
- a) Detecting any genetic abnormality
- b) Detecting the sex of the unborn fetus
- c) Artificial insemination
- d) Transfer of the embryo into the uterus of a surrogate mother
Answer: a) Detecting any genetic abnormality
Question 18: Which one of the following is the most widely accepted method of contraception in India at present?
- (a) Cervical caps
- b) Tubectomy
- c) Diaphragms
- d) IUD (intrauterine devices)
Answer: d) IUD (intrauterine devices)
Question 19: Medical Termination of Pregnancy (MTP) is considered safe up to how many weeks of pregnancy?
- a) Eight weeks
- b) Twelve weeks
- c) Eighteen weeks
- d) Six weeks
Answer: b) Twelve weeks
Question 20: After in vitro fertilization:
- a) An embryo with more than 8 cells is implanted in the uterus.
- b) Embryos with more than 16 cells are not implanted in the uterus.
- c) Embryos with 8–16 cells can be implanted in the uterus.
- d) An embryo with more than 16 cells is implanted in the uterus.
Answer: c) An embryo with 8–16 cells can be implanted in the uterus.
Question 21: The Test- Tube The baby program employs which one of the following techniques?
- a) Gamete intra-fallopian transfer (GIFT)
- b) Zygote intra-fallopian transfer (ZIFT)
- c) Intracytoplasmic sperm injection (ICSI)
- d) Intrauterine insemination (IUT)
Answer: b) Zygote intra-fallopian transfer (ZIFT)
Question 22: Which of the following is correct about human reproduction?
- a) 'Saheli' is a new contraceptive for males
- b) Amniocentesis is carried out to determine the chromosomal pattern from the sample taken from the cells of the umbilical cord.
- c) Ovulation is facilitated by breast-feeding.
- d) A combination of progesterone and estrogen is injected or implanted under the skin as an effective contraceptive.
Answer: b) Amniocentesis is carried out to determine the chromosomal pattern from the sample taken from the cells of the umbilical cord.