Biology

Human Reproductive System

751 Questions

The human reproductive system covers the anatomy of reproductive organs, gamete production, fertilization processes, and reproductive technologies. This is a highly scoring area in biology sections of competitive exams. Use these questions to practice key concepts.

Fertilization processGamete productionReproductive organ functionsAssisted reproductive technology

Human Reproductive System Questions

Multiple choice

Consider the following statements: (a) Endometrium is the innermost layer of uterus, which is highly vascularised and rich in glands. (b) Gametogenesis is the process of formation of gametes in sexual reproduction. (c) Ribosomes provide energy for the movement of sperm. Which of the above statements is / are correct?

  1. Only (a) and (c)

  2. Only (a) and (b)

  3. Only (b) and (c)

  4. All of the above

  5. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement (a) is correct. Endometrium is the innermost layer of uterus, which is highly vascularised and rich in glands. Statement (b) is correct. Gametogenesis is the process of formation of gametes in sexual reproduction. Statement (c) is incorrect. Mitochondria provides energy for the movement of sperm. Ribosomes are not present.

Multiple choice

Consider the following statements: (a) Uterus is the site for implantation of embryo, menstruation and child birth. (b) Fallopian tubes secrete progesterone hormone for maintaining pregnancy. (c) Seminiferous tubules form the spermatozoa and secrete testosterone. Which of the above statements is / are correct?

  1. Only (a) and (b)

  2. Only (b) and (c)

  3. Only (a) and (c)

  4. All of the above

  5. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement (a) is correct. Uterus is the site for implantation of embryo, menstruation and child birth. Statement (b) is incorrect. Corpus luteum, not fallopian tubes, secrete progesterone hormone for maintaining pregnancy. Statement (c) is correct. Seminiferous tubules form the spermatozoa and secrete testosterone.

Multiple choice

Consider the following statements: (a) Cowper's gland is present below prostate gland and its secretion is alkaline and serves as lubricant for semen. (b) Egg is a result of gametogenesis (oogenesis) and has haploid number of chromosomes. (c) Zygote is a result of fertilisation of egg by male gamete and has diploid number of chromosomes. Which of the above statements are correct?

  1. Only (b) and (c)

  2. Only (a) and (c)

  3. Only (a) and (b)

  4. All of the above

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement (a) is correct. Cowper's gland is present below prostate gland and its secretion is alkaline and serves as lubricant for semen. Statement (b) is correct. Egg is a result of gametogenesis (oogenesis) and has haploid number of chromosomes. Statement (c) is correct. Zygote is a result of fertilisation of egg by male gamete and has diploid number of chromosomes.

Multiple choice

Which of the following statements is incorrect?

  1. Vasa efferentia leave the testis and open into epididymis.

  2. Vas deferens that ascends to the abdomen and loops over the urinary bladder.

  3. Seminiferous tubules of the testis open into the vasa efferentia.

  4. Epididymis leads to vas deferens.

  5. Rete testis is between epididymis and vas deferens.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Seminiferous tubules of the testis open into the vasa efferentia through rete testis.

Multiple choice

Which of the following statements is/are correct?

a. The sex of a human offspring is decided by the chromosome of sperm at the time of fertilisation. b. In some reptiles, the temperature at which the fertilised egg is incubated before hatching determines the sex of the hatched progeny. c. In some animals, individuals can change sex and it is not determined genetically.

  1. a and b

  2. a and c

  3. b and c

  4. a, b and c

  5. a only
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer as all the statements are correct. The sex of a human offspring is decided by the chromosome of sperm at the time of fertilisation. In some reptiles, the temperature at which the fertilised egg is incubated before hatching determines the sex of the hatched progeny. In some animals, individuals can change sex and it is not determined genetically.

Multiple choice

Traumatic insemination is the mating practice in some species of invertebrates in which the male pierces the female's abdomen with his penis and injects his sperm through the wound into her bloodstream. It is observed in which of the following organisms?

  1. Blue milkweed beetle

  2. Euryplatea nanaknihal

  3. Mantodea

  4. Cimex lectularius
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Traumatic insemination is seen in Cimex lectularius (bed bug). The male stabs female with knife like penis and injects sperm directly into her bloodstream.

Multiple choice

Consider the following statements: (a) Endometrium is the innermost layer of uterus which is highly vascularized and rich in glands. (b) Gametogenesis is the process of formation of gametes in sexual reproduction. (c) Golgi provide energy for the movement of sperm. Which of the above statements are correct?

  1. Only (a) and (c)

  2. Only (a) and (b)

  3. Only (b) and (c)

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement (a) is correct. Endometrium is the innermost layer of uterus which is highly vascularized and rich in glands. Statement (b) is correct. Gametogenesis is the process of formation of gametes in sexual reproduction. Statement (c) is incorrect. Mitochondria provides energy for the movement of sperm.

Multiple choice

In which of the following techniques do eggs and sperm are collected and injected directly into the upper regions of the oviducts, where fertilization normally takes place?

  1. Gamete intrafallopian transfer (GIFT)

  2. Intracytoplasmic sperm injection (ICSI)

  3. Zygote intrafallopian transfer (ZIFT)

  4. Embryo transfer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In gamete intrafallopian transfer (GIFT)eggs and sperm are collected and injected directly into the upper regions of the oviducts, where fertilization normally takes place.

Multiple choice

IVF technique is useful for those couples that

  1. can produce sperms but no eggs

  2. cannot produce eggs and sperms and cannot fertilise due to blocked oviducts

  3. cannot produce sperms but can produce eggs

  4. cannot produce eggs and sperms but can fertilise due to open oviducts

  5. can produce sperms and eggs but fertilisation cannot take place due to blocked oviducts.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

IVF technique is useful for those couples that can produce sperms and eggs.

Multiple choice

Match the following:

 
a. Sperm 1. It is the female gamete in animals.
b. Zygote 2. It is the new cell that is formed by the fusion of a male gamete and a female gamete.
c. Egg 3. It is the male gamete in animals.

  1. a - 3, b - 2, c - 1

  2. a - 3, b - 1, c - 2

  3. a - 1, b - 3, c - 2

  4. a - 2, b - 3, c - 1

  5. a - 1, b - 2, c - 3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sperm is the male gamete in animals. Zygote is the new cell that is formed by the fusion of male and female gametes. Egg is the female gamete in animals.