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

Spermatids are

  1. haploid

  2. diploid

  3. triploid

  4. polyploid

  5. tetraploid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sperms are always haploid, i.e., they possess 23 chromosomes.

Multiple choice

When does implantation of egg in humans occur?

  1. After 7 days of fertilisation

  2. After 2 months of fertilisation

  3. Within 5 days of fertilisation

  4. On 20th day of fertilisation

  5. After 28 days of fertilisation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Implantation is the attachment of blastocyst to the uterine wall. It occurs after 7 days of fertilisation.

Multiple choice

The pathway of the spermatozoa from the testes to the exterior of the body through tubules in the correct order is

  1. epididymis, vas deferens, ejaculatory duct and the urethra

  2. vas deferens, ejaculatory duct, urethra, and epididymis

  3. epididymis, vas deferens, urethra and ejaculatory duct

  4. ejaculatory duct, vas deferens, urethra and epididymis

  5. vas deferens, ejaculatory duct, epididymis and the urethra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pathway of the spermatozoa from the testes to the exterior is : Epididymis, vas deferens, ejaculatory duct and the urethra.

Multiple choice

In the female reproductive system, which route do sperms follow?

  1. Vagina, cervical canal, fallopian tube, uterus

  2. Vagina, fallopian tube, cervical canal, uterus

  3. Vagina, cervical canal, uterus, fallopian tube

  4. Vagina, uterus, cervical canal, fallopian tube

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

In the female reproductive system, sperms follow the following route: vagina, cervical canal, uterus, fallopian tube.

Multiple choice

Consider the following statements: (a) In conjugation, the fusion of two gametes takes place completely and permanently. (b) Entire mature organism starts to act as gamete and fusion of individuals occurs, this is known as isoogamy. (c) Prostrate gland is present around urethra in males and discharges its secretion into urethra and contributes 15 to 30% of volume of semen. 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
A Correct answer
Explanation

Statement (a) is correct. In syngamy, the fusion of two gametes takes place completely and permanently. It is most common type of reproduction in plants and animals. Statement (b) is incorrect. Entire mature organism starts to act as gamete and fusion of individuals occurs, this is known as hologamy. Statement (c) is correct. Prostrate gland is present around urethra in males and discharges its secretion into urethra and contributes 15 to 30% of volume of semen.

Multiple choice

Consider the following statements: (a) Acrosome facilitates fertilization by rupturing vitelline membrane as it contains hyalourinidase enzymes, which helps the sperm to penetrate into the ovum. (b) Leydig cells are found in the connective tissue around the seminiferous tubules of testes. They secrete testosterone into the blood. (c) Epididymis is a convoluted tube that leads into vas deferens. Which of the above statements is / are incorrect?

  1. Only (a) and (c)

  2. Only (a) 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
E Correct answer
Explanation

Statement (a) is correct. Acrosome facilitates fertilization by rupturing vitelline membrane as it contains hyalourinidase enzymes, which help the sperm to penetrate into the ovum. Statement (b) is correct. Leydig cells are found in the connective tissue around the seminiferous tubules of testes. They secrete testosterone into the blood. Statement (c) is correct. Epididymis is a convoluted tube that leads into vas deferens. In the epididymis, the sperms are temporarily stored so that they become motile. All are correct.

Multiple choice

Consider the following statements: (a) Ovulation is the process where ova are formed and developed in the germinal epithelium of the ovary. (b) Spermiogenesis is the process where spermatids are transformed into haploid and flagellated spermatozoans. (c) Spermatogenesis is the process where haploid spermatozoans are formed from the diploid sperm mother cells in the seminiferous tubules of testes. 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
C Correct answer
Explanation

Statement (a) is incorrect. Oogenesis, not ovulation, is the process where ova are formed and developed in the germinal epithelium of the ovary. Statement (b) is correct. Spermiogenesis is the process where spermatids are transformed into haploid and flagellated spermatozoans. Statement (c) is correct. Spermatogenesis is the process where haploid spermatozoans are formed from the diploid sperm mother cells in the seminiferous tubules of testes.

Multiple choice

Consider the following statements: (a) Vas deferens is a straight muscular tube carrying sperms from epididymis to urethra. (b) Vagina receives the ovum from the ovary and the ovum is fertilized inside the fallopian tube. (c) Fallopian tubes serve as the lower portion of the birth canal and helps in uterine secretion and menstrual flow. Which of the above statements is / are incorrect?

  1. Only (b) and (c)

  2. Only (a) and (c)

  3. Only (a) and (b)

  4. All of the above

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

Statement (a) is correct. Vas deferens is a straight muscular tube carrying sperms from epididymis to urethra. Statement (b) is incorrect. Fallopian tubes receive the ovum from the ovary and the ovum is fertilized inside the fallopian tube. Statement (c) is incorrect. Vagina serves as the lower portion of the birth canal and helps in uterine secretion and menstrual flow.

Multiple choice

Consider the following statements: (a) Scrotum keeps the testes at a cooler temperature than the body temperature to produce viable spermatozoa. (b) Graafian follicles produce the ova and female sex hormone oestrogens. (c) The proximal centriole passes into the ovum during fertilization and helps in first division of the fertilized ovum. Which of the above statements is / are correct?

  1. Only (a) and (c)

  2. Only (a) 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
D Correct answer
Explanation

Statement (a) is correct. Scrotum keeps the testes at a cooler temperature than the body temperature to produce viable spermatozoa. Statement (b) is correct. Graafian follicles produce the ova and female sex hormone oestrogens. Statement (c) is correct. The proximal centriole passes into the ovum during fertilization and helps in first division of the fertilized ovum. All are correct.

Multiple choice

Consider the following statements: (a) Surgical removal of uterus is called hysterectomy. (b) Partial or complete absence of sperms in semen is called zoospermia. (c) The period from fertilization till birth of child is called gestation period. Which of the above statements is / 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 the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement (a) is correct. Surgical removal of uterus is called hysterectomy. Statement (b) is incorrect. Partial or complete absence of sperms in semen is called azoospermia. Statement (c) is correct. The period from fertilization till birth of child is called gestation period.

Multiple choice

Consider the following statements: (a) The method of surgical operation in female where fallopian tube is cut and tied for family planning is called vasectomy. (b) The gestation period in human female is around 380 days. (c) The full form of AIH is Artificial Insemination Husband. Which of the above statements is / are incorrect?

  1. Only (a) and (b)

  2. Only (a) and (c)

  3. Only (b) and (c)

  4. All of the above

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

Statement (a) is incorrect. The method of surgical operation in female where fallopian tube is cut and tied for family planning is called tubectomy. Statement (b) is incorrect. The gestation period in human female is around 280 days. Statement (c) is correct. The full form of AIH is Artificial Insemination Husband.