NEET Biology Human Reproduction MCQs Set 31

Biology Objective Questions and Answers: Human Reproduction

Review structured MCQ sets for NEET Biology Human Reproduction. Built according to official NEET guidelines, these downloadable questions support daily revision and core concept reinforcement.

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Multiple Choice Questions

Question 1: The head of sperm contains the nucleus having a haploid set of chromosomes in a :
(a) Compact and inactive state
(b) Compact and active state
(c) Rare and inactive state
(d) Rare and active state
Show Answer & Explanation

Answer: (a) Compact and inactive state

Explanation:
1. The sperm head contains a haploid nucleus in a compact, inactive state.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 2: In humans which of the following undergoes meiosis II ?
(a) Second polar body
(b) Spermatogonia
(c) Secondary oocyte
(d) Both (1) and (3)
Show Answer & Explanation

Answer: (c) Secondary oocyte

Explanation:
1. The secondary oocyte completes meiosis II only when a sperm enters it; the second polar body is a product of that division.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 3: Which of the following statement is not correct ?
(a) Cleavage divisions are rapid
(b) Cleavage divisions are asynchronous
(c) Cleavage divisions are repeated mitotic divisions.
(d) Approximately one month after fertilisation, the blastocyst embedded itself in the thickened wall of the uterus.
Show Answer & Explanation

Answer: (d) Approximately one month after fertilisation, the blastocyst embedded itself in the thickened wall of the uterus.

Explanation:
1. The blastocyst implants in the uterine wall about 7 days after fertilisation, not a month after.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

Question 4: The base of the sertoli cells adhere to the basal lamina and their apical ends frequently expand into the ........... of the seminiferous tubules.
(a) Surface
(b) Lumen
(c) Outer membrane
(d) Inner layer
Show Answer & Explanation

Answer: (b) Lumen

Explanation:
1. The Sertoli cells are attached at their base to the basal lamina and their apical ends extend into the lumen of the seminiferous tubules.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 5: Intra testicular genital duct system includes :
(a) Tubuli recti, rete testis and ductuli efferentes
(b) Tubuli recti, vas deferens and ejaculatory duct
(c) Urethra, epididymis and Tubuli recti
(d) Seminal vesicle, ejaculatory duct and ampulla
Show Answer & Explanation

Answer: (a) Tubuli recti, rete testis and ductuli efferentes

Explanation:
1. The intratesticular duct system includes tubuli recti, rete testis and ductuli efferentes.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 6: During the first two months of pregnancy the basic structures are formed. During this period, the developing stage is called as :
(a) Infant
(b) Foetus
(c) Child
(d) Embryo
Show Answer & Explanation

Answer: (d) Embryo

Explanation:
1. The developing stage during the first two months of pregnancy, when the basic structures form, is the embryo.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

Question 7: Which is not correct about amnion ?
(a) It acts as a shock absorber
(b) It provides a fluid medium to the developing embryo.
(c) It takes part in the formation of human placenta
(d) None of the above
Show Answer & Explanation

Answer: (c) It takes part in the formation of human placenta

Explanation:
1. The chorion, not the amnion, takes part in forming the placenta; the amnion is a shock absorber that provides fluid medium.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 8: Zona pellucida is synthesised by :
(a) Follicle cells
(b) Oocyte
(c) Both follicle cells and Oocyte
(d) Granulosa cells
Show Answer & Explanation

Answer: (b) Oocyte

Explanation:
1. The zona pellucida is secreted by the oocyte.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 9: Corpus luteum is formed by :
(a) Granulosa cells
(b) Interstitial cells
(c) Follicle cells + Granulosa cells
(d) Granulosa cells + Theca cells
Show Answer & Explanation

Answer: (d) Granulosa cells + Theca cells

Explanation:
1. The corpus luteum is formed from granulosa cells and theca cells of the ruptured follicle.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

Question 10: Which of the following set is correct ?
(a) Ovarian follicle - Estrogen
(b) Corpus luteum - Progesterone & Estrogen
(c) Placenta - HCG hormone
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. Ovarian follicles secrete oestrogen, the corpus luteum progesterone and oestrogen, and the placenta secretes hCG.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 11: Which pair is correct ?
(a) Progesterone ® Steroid Estrogen ® Protein
(b) Progesterone & Estrogen ® Protein
(c) Progesterone & Estrogen ® Steroid
(d) Progesterone ® Protein Estrogen ® Steroid
Show Answer & Explanation

Answer: (c) Progesterone & Estrogen ® Steroid

Explanation:
1. Progesterone and oestrogen are both steroid hormones.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 12: Which of the following method of contraception is effective only upto a maximum period of six months following parturition ?
(a) Cortus interruptus
(b) Lactational amenorrhea
(c) Periodic abstinance
(d) Condoms
Show Answer & Explanation

Answer: (b) Lactational amenorrhea

Explanation:
1. Lactational amenorrhoea is effective only up to about six months after parturition, as long as the mother breastfeeds fully.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

Question 13: Which of the following are included in barrier method ?
(a) Condoms
(b) Diaphrams
(c) Cervical caps and vault
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. Condoms, diaphragms, cervical caps and vaults are all barrier methods.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 14: Which of the following statements is correct ?
(a) Hormone releasing I.U.D. make uterus unsuitable for implantation
(b) IUD are ideal contraceptives for the female who want to delay pregnancy
(c) IUD is most widely accepted method of contraception in India.
(d) All the above
Show Answer & Explanation

Answer: (d) All the above

Explanation:
1. Hormone releasing IUDs make the uterus unsuitable for implantation, IUDs are ideal for delaying pregnancy and they are widely accepted in India.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 15: Which of the following statements is correct for Saheli ?
(a) It is weekly pill.
(b) It has high contraceptive value
(c) It has nonsteroidal preparation
(d) All the above
Show Answer & Explanation

Answer: (d) All the above

Explanation:
1. Saheli is a non-steroidal weekly pill with high contraceptive value.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

Question 16: Which of the following can be used as an emergency contraceptives to avoid possible pregnancy :
(a) Progestogens
(b) IUD within 72 hours
(c) Diaphrams
(d) 1 and 2
Show Answer & Explanation

Answer: (d) 1 and 2

Explanation:
1. Progestogens or IUDs within 72 hours of coitus can be used as emergency contraceptives.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 17: Which of the following method of contraception is highly effective but having poor reversibility :
(a) Sterilisation
(b) Oral pills
(c) IUD
(d) Barrier methods
Show Answer & Explanation

Answer: (a) Sterilisation

Explanation:
1. Sterilisation is highly effective but its reversibility is poor.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 18: Which of the following statements is correct :
(a) MTP has a significant role in decreasing the population.
(b) Goverment of India legalised MTP in 1971 with some strict conditions.
(c) MTP is relatively safe during the first trimester.
(d) All the above
Show Answer & Explanation

Answer: (d) All the above

Explanation:
1. MTP was legalised in India in 1971 with some strict conditions, is relatively safe in the first trimester and helps control population.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

Question 19: Couple unable to produce children inspite of unprotected sexual co-habitation is termed as :
(a) Impotency
(b) Infertility
(c) STD
(d) PID
Show Answer & Explanation

Answer: (b) Infertility

Explanation:
1. Inability to conceive despite unprotected cohabitation is infertility.

Teacher's Note:
1. The sperm head holds the haploid nucleus in a compact, inactive state, covered by the acrosome.
2. The corpus luteum forms from granulosa and theca cells after ovulation and secretes progesterone.

Question 20: Infertility cases due to inability of male partner to inseminate the female corrected by :
(a) ZIFT
(b) GIFT
(c) Artificial insemination
(d) ICSI
Show Answer & Explanation

Answer: (c) Artificial insemination

Explanation:
1. Artificial insemination (AI or IUI) helps when the male partner cannot inseminate the female.

Teacher's Note:
1. Implantation of the blastocyst occurs about 7 days after fertilisation, and the placenta, a structural and functional link between mother and foetus, also acts as an endocrine gland (hCG, hPL, oestrogen, progesterone).
2. The first two months of development are the embryonic stage and afterwards the foetus.

Question 21: In which of the following methods zygotes or early embryo upto 8 blastomeres could be transferred into the fallopian tube ?
(a) GIFT
(b) IUT
(c) ZIFT
(d) ICSI
Show Answer & Explanation

Answer: (c) ZIFT

Explanation:
1. In ZIFT the zygote or early embryo with up to 8 blastomeres is transferred into the fallopian tube.

Teacher's Note:
1. Contraception methods include barrier methods, IUDs, oral pills, Saheli (non-steroidal weekly pill), sterilisation and lactational amenorrhoea; MTP is legal under the 1971 Act.
2. ART: IVF, ZIFT (zygote or early embryo up to 8 blastomeres into the fallopian tube), GIFT, ICSI and artificial insemination.

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Human Reproduction Objective Questions & Solutions for NEET Biology

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