Biology

Human Reproductive System

786 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
  1. prostate

  2. rete testis

  3. seminal vesicle

  4. Cowper's gland

  5. epididymis

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Seminal vesicle contains seminal fluid which has fructose, citric acid, coagulating enzyme, vesiculose enzyme and other nutrient substance which provide nutrient to sperm. So, this answer is right.

Multiple choice
  1. generative cell

  2. tube cell

  3. body cell

  4. prothallial cell

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

During the development of the male gametophyte in angiosperms, the generative cell divides mitotically to form two male gametes, whereas the tube cell is responsible for producing the pollen tube.

Multiple choice
  1. Sperm transit

  2. Testosterone production

  3. Maintaining the blood–testis barrier

  4. Sperm storage

  5. Sperm nourishment

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Both the epididymis and the vas deferens are made up of ducts, which have muscular components. These muscular parts aid in peristalsis, which helps move spermatozoa along the ducts.

Multiple choice
  1. Metabolic support of developing spermatozoa.

  2. Synthesis of inhibin and antimullerian hormone.

  3. Maintaining the position of primordial germ cells against the basement membrane.

  4. Maintenance of the blood–testis barrier.

  5. Aromatisation of androgen precursors to estrogen.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Primordial germ cells are maintained against the basement membrane of the seminiferous tubules; Sertoli cells do not appear to have a role in this process.

Multiple choice
  1. Leydig cell stimulation

  2. Decreased Mullerian inhibiting substance

  3. Initiation of spermatogenesis  

  4. Increased mass of seminiferous tubules

  5. Spermatogenesis occurs in many structures of the male reproductive system

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mullerian inhibiting substance (MIS) is responsible for causing the müllerian ducts to degenerate, accounting for the sole development of male internal genitalia in a fetus with a functional testis. If it is absent during fetal development, female internal genitalia would develop by default.

Multiple choice
  1. Seminal vesicles

  2. Bulbourethral glands

  3. Prostate gland

  4. Urethra

  5. Ejaculatory ducts

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

These are pea-sized structures located on the sides of the urethra . These glands produce transparent, slippery fluid which serves to lubricate the urethra and to neutralize the acidity present due to the drops of urine in the urethra.

Multiple choice
  1. The spermatids differentiate into structurally different complex.

  2. Fertilization is a physico-chemical event.

  3. Cleavage transforms the fertilized ovum into a sphere of aggregated blastomeres.

  4. Cleavage divisions bring appreciable increase in the mass of protoplasm in the developing embryo.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cleavage involves rapid mitotic divisions that increase the number of cells (blastomeres) without increasing the overall size or mass of the embryo. Therefore, the statement that it brings an appreciable increase in the mass of protoplasm is incorrect.

Multiple choice
  1. prevent entrance of more than one sperm

  2. activate the egg to make it to undergo change

  3. bring change in the composition of cytoplasm

  4. induce physiological changes

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The formation of the fertilization membrane (cortical reaction) is a defense mechanism that prevents polyspermy, ensuring that only one sperm fertilizes the egg.

Multiple choice
  1. testis are excised

  2. testis do not descend in the scrotal sacs

  3. testis do not nourish the sperm

  4. testis cannot produce sperm

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cryptorchidism or undescended testis (UDT) is one of the most common pediatric disorders of the male endocrine glands and the most common genital disorder identified at birth.