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 zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Leydig cells are meant for 

  1. Formation of sperm

  2. Production of progesterone

  3. Production of testosterone

  4. Nutrition of sperm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Leydig cells, also known as interstitial cells of Leydig, are found adjacent to the seminiferous tubules in the testicle. They produce testosterone in the presence of luteinizing hormone (LH). 

Multiple choice zoology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

Abnormal condition where mammary gland of man become female like is called as 

  1. Gynosism

  2. Gynochorism

  3. Feminization

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

Gynaecomastia refers to the presence of enlarged mammary glands in males like that of females and is caused by the presence of extra X chromosome in males. Gonochorism is the unisexual condition. Feminization refers to the development of female secondary sexual characters caused by hormonal changes at puberty in females. So, the correct answer is option D.

Multiple choice biology control and coordination in living organisms control of blood glucose endocrine system and hormone hormones in human reproduction testes and ovary parts of the brain kidney

The formation of egg and sperm is affected by 

  1. LH

  2. MSH

  3. TSH

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

In women, FSH hormone stimulates the growth of ovarian follicles in the ovary, before the release of an egg from one follicle at ovulation. It also increases oestradiol production. 

In men, follicle stimulating hormone acts on the Sertoli cells of the testes to stimulate sperm production (spermatogenesis).

Multiple choice biology reproductive health stds and infertility gm crops biotechnology

Read the following statements and select the incorrect one.

  1. Semen is preserved for artificial insemination by heating

  2. Mating of an animal within the same breed, but having no common ancestors on either side of their pedigree upto 4 - 6 generations is called as outcrossing

  3. Example of interspecific hybridisation is mule

  4. Hinny is a hybrid between the female ass and stallion.
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice

Gametes are sex cells.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gametes (sperm and egg cells) are haploid cells produced through meiosis, specifically designed for sexual reproduction.

Multiple choice

Embry rescue means

  1. Embry fail for fertilisation

  2. Cell fail for ferti

  3. Fertilisation absent

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

Embryo rescue is a plant breeding technique used to save weak, immature, or hybrid embryos that would otherwise abort or fail to develop after fertilization has occurred.

Multiple choice

Releasing of egg or ovum from graafian follicles is called as

  1. Maturation

  2. Fertilization

  3. Ovulation

  4. Projection
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ovulation is the biological process in which a mature Graafian follicle ruptures to release a mature egg (ovum) into the fallopian tube. This typically occurs midway through the menstrual cycle.

Multiple choice

Which structure helps the sperm in penetrating into ovum ?

  1. Tail

  2. Head

  3. Acrosome

  4. Mitochondria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The acrosome is a specialized cap-like organelle at the tip of the sperm's head. It contains digestive enzymes that break down the outer protective layers of the ovum, allowing the sperm to penetrate and fertilize it.

Multiple choice

Fusion nucleus + male nucleus = --------

  1. Zygote

  2. Endosperm

  3. Ovary

  4. Seed
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In angiosperms, double fertilization occurs where one male gamete fuses with the egg to form a zygote, and the second male gamete fuses with the diploid secondary (fusion) nucleus to form the triploid endosperm, which provides nutrition to the embryo.

Multiple choice

What happens on National Father's Day in Thailand?

  1. Toenails that have been cut and saved throughout the year are given to gods

  2. Blood is donated & captive animals are set free

  3. Bananas are taken to the temple and left for the ancestors.

  4. All men shave their heads and walk around shirtless
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In Thailand, Father's Day is celebrated on December 5, which is the birthday of the late King Bhumibol Adulyadej. It is a widespread tradition for Thai people to perform acts of merit, such as donating blood and releasing captive animals like birds and fish. This reflects Buddhist values of compassion and life-giving.

Multiple choice

Which system varies the most between male and females?

  1. Integumentary

  2. Endocrine

  3. Reproductive

  4. Lymphatic
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The reproductive system contains the primary sex organs and structures, which differ fundamentally between biological males and females to enable sexual reproduction. Other organ systems, like the integumentary, endocrine, and lymphatic systems, share the same basic structures and functions across both sexes.

Multiple choice

What are sex cells in humans called?

  1. Proteins

  2. Somatic cells

  3. Gametes

  4. Hormones
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gametes are reproductive cells (sperm and egg) that carry half the genetic information of the parent. Somatic cells are all other body cells.