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

Animal semen for breeding of animals remains fertile for a long time at

  1. 37o C

  2. 4o C

  3. -4o C

  4. -196o C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Animal semen is preserved at very low temperatures for long-term storage in breeding programs. While 4°C can preserve for short periods, -4°C would allow longer preservation. However, in modern practice, liquid nitrogen at -196°C is used for long-term preservation. Among the options, -4°C is the most reasonable choice for extended fertility.

Multiple choice

Which of the following is the correct sequence of stages in sexual reproduction?

  1. Zygote development -> Fertilization -> Embryo <font face="Arial" size="2">formation</font>-> Gametes formation

  2. Gametes <font face="Arial" size="2">formation</font> -> Zygote <font face="Arial" size="2">development </font> -> Fertilization -> Embryo formation

  3. Gametes <font face="Arial" size="2">formation</font> -> Fertilization -> Zygote <font face="Arial" size="2">development </font>-> Embryo formation

  4. Gametes formation-> Fertilization -> Embryo formation-> Zygote development

  5. Zygote development -> Gametes formation -> Fertilization -> Embryo formation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gametes from male and female fertilize to form zygote. The zygote goes through repeated divisions and develop into embryo. 

Multiple choice

Which of the following statements is not true for the process of fertilization?

  1. In amphibians, fertilization takes place outside the body.

  2. In Spirogyra, fertilization takes place inside the body.

  3. Fertilization restores the full set of chromosomes in the zygote.

  4. Fertilization does not take place in asexual reproduction.

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

Spirogyra reproduce by asexual method. Therefore, no fertilization takes place in Spirogyra. 

Multiple choice

Which of the following is not an advantage of external fertilization?

  1. Minimal contact

  2. Decreased risk of infections

  3. Minimal transmission of body fluids

  4. Limited number of offsprings

  5. None of these

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

Organisms that reproduce externally produce a large number of offsprings and they need to release large number of gametes in water. 

Multiple choice

Why are testes located outside the body in scrotum?

  1. Because they require temperature lower than the internal body temperature for sperm production.

  2. Because they require temperature higher than the internal body temperature for sperm production.

  3. Because they require space for storage of sperms.

  4. Because they have to transfer sperms through penis.

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

Testes are located outside the body in scrotum as they require lower temperature to produce sperms.