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

Which of the following statements is/are false?

a. Sexual reproduction takes place by the combination of special reproductive cells called 'sex cells'. b. In sexual reproduction, a male gamete fuses with a female gamete to form a new 'zygote'. c. Ova are the male sex cells of animals and sperms are the female sex cells of animals.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only c

  5. Only b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as this statement is false. Sperm are the male sex cells of animals and ova are the female sex cells of animals. This is a wrong option.

Multiple choice

In sperms, mitochondria occur in the

  1. acrosome

  2. tail

  3. nucleus

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

The middle piece consists of a sheath of ring-shaped mitochondria grouped around the axoneme to provide energy for flagellar movement.

Multiple choice

Which of the following is/are the precaution(s) to be observed for artificial insemination?

a. The semen should be obtained from a high quality male animal. b. The selected female should be healthy and of sound breeding age. c. Artificial insemination should be carried out only at the proper heat-period of the female animal.

  1. Only a

  2. Only a and b

  3. Only b

  4. a, b and c

  5. Only b and c
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as all of the above are the precautions that should be observed for artificial insemination.

Multiple choice

Where does the fertilization of ovum take place?

  1. Vestibule

  2. Vagina

  3. Uterus

  4. Fallopian tubes

  5. Cowper's gland
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The fallopian tube extends from the uterus to the ovary. This tube carries eggs and sperm and is where fertilization of the egg or ovum takes place.

Multiple choice

Spermatozoa are produced from__________.

  1. spermatids

  2. primary spermatocytes

  3. secondary spermatocytes

  4. spermatogonia

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

The spermatid is the haploid male gametid that results from division of secondary spermatocytes.

Multiple choice

What is removed in vasectomy?

  1. Vas deferens

  2. Uterus

  3. Oviduct

  4. Vagina

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

Vasectomy means surgical removal of the vas deferens.

Multiple choice

Which statement is incorrect?

  1. Eggs can either oval or round or square.

  2. The white of eggs is called albumen.

  3. The yellow of egg is called yolk.

  4. The egg shell is porous, which allows air to go in and out.

  5. Animals that lay eggs are called oviparous animals.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is a incorrect statement. Eggs can be oval or round in shape, but it can not be a square in shape.

Multiple choice

Animal sperms possess acrosome that helps it to enter into the ovum. Which of the following cell organelles synthesises acrosome of a sperm?

  1. Mitochondrion

  2. Golgi apparatus

  3. Endoplasmic reticulum

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

Golgi apparatus is composed of stacks of membrane-bound structures known as cisternae. It helps in the storage, packaging and transport of materials synthesised in the endopolasmic reticulum. It also forms the acrosome of a sperm.

Multiple choice

Which among the following characterises the meiosis in humans?

  1. Sperm and ova are not similar to the respective parent cells.

  2. Females produce more gametes than males.

  3. The process commences both in males and females at the time of puberty.

  4. It produces somatic body cells.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sperm and ova are very different from the parent cells that produced them. Most notably, they only have half the number of chromosomes. They also show anatomical differences, such as the flagellum (or tail) on a sperm cell.

Multiple choice

Pick the correct statement regarding the human reproduction.

  1. The process of mitosis in men is also known as spermatogenesis.

  2. The sperm and ova are together known as zygotes.

  3. The process of oogenesis occurs in the ovaries of females.

  4. Sperm cells divide through out their life span.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ova are produced in the ovaries. At ovulation, a secondary oöcyte passes down one of the fallopian tubes to the uterus where a fetus can develop normally if fertilization has occurred (in the fallopian tube) and meiosis completed.

Multiple choice

Oocytes can be defined as

  1. the ova that have not yet completed the process of oogenesis

  2. the points on chromosomes where ova are formed

  3. the male counterpart of ova

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

In humans, about 7 million primary oِcytes are produced at beginning of the fetal stage, before birth. Of these, less than 500 eventually become secondary oِcytes after puberty and are released at ovulation. Oogenesis is completed at conception.

Multiple choice

As a consequence of fertilization, which among the following generally takes place in course of development?

  1. Formation of a gamete

  2. The male & female gametes combine their genetic material to produce an offspring with the same number of chromosomes as the parents.

  3. The male & female gametes combine their genetic material to create an offspring with the half number of chromosomes as the parents.

  4. The final phase of spermatogenesis starts.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The single cell zygote is created by fertilization of male & female gametes then progressively becomes a complex multicellular embryo by mitosis and eventually develops into a recognizable fetus.