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 female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Which of the following is the correct order so as to be in a logical sequence?

  1. Implantation, Ovulation, Child birth, Gestation, Fertilisation.

  2. Coitus, Ovum, Sperm, Sperm duct, Urethra, Vagina.

  3. Sperm duct, Penis, Testes, Sperms, Semen.

  4. Puberty, Menopause, Menstruals, Menarche, Reproductive age.

  5. Graafian Follicle, Ovum, Fallopian Tube, Uterus.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

A. The release of ovum occurs first, followed by fertilization, implantation in the uterus, gestation in which the foetus develops and then childbirth. So, the correct order is Ovulation, Fertilization, Implantation, Gestation, Childbirth

B. The sperm has to move to the sperm duct and through the act of coitus, it will de be inseminated in the vagina. So, the correct sequence is Sperm, Sperm duct, Urethra, Coitus, Vagina, Ovum.
C. Sperms are made in the testes and move to sperm duct where the secretion of glands combine with sperm to make semen. So, the correct sequence is Testes, Sperms, Sperm duct, Semen, Penis.
D. These are the reproductive stages in human female life-cycle. So, the correct sequence is Puberty, Reproductive age, Menarche,  Menstrual, Menopause.
E. These are the phases in the release of the ovum from the ovaries. So, the correct sequence is Graafian Follicle, Ovum, Fallopian Tube, Uterus.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

The process of formation of ova is called

  1. Ovulation

  2. Oviparous

  3. Oogenesis

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Oogonia develops into the primary oocytes. In meiosis I the primary oocyte forms a polar body and a secondary oocyte. After meiosis I, the haploid secondary oocyte initiates meiosis II. When meiosis II is completed, an ootid and another polar body is created. Polar bodies degenerate at the end of meiosis II, leaving only the ootid that develops into a mature ovum. Thus the correct answer is option C.
Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

As compared to the sperm the egg contains more 

  1. Chromosomes

  2. Centrioles

  3. Cytoplasm

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

In most of the higher plants and animals including humans, the male gamete is small and motile, whereas, female gamete is large and immotile. The female gamete contributes both the genetic material as well as cytoplasm during zygote formation as compared to this the male gamete does not contribute cytoplasm but provides only half the genetic complement. Hence, major cell organelles like mitochondria and chloroplasts show cytoplasmic or maternal inheritance pattern. Thus, the correct answer is option C.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Fertilizins are emitted by

  1. Immature eggs

  2. Mature eggs

  3. Sperms

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

Mature egg secretes a chemical known as fertilizin, which is composed of glycoprotein (monosaccahride and fatty acid substance). Sperm has on its surface a protein substance known as antifertilizin, which is composed of acidic amino acids. The fertilizin and antifertilizin interacts together and this interaction makes the sperms stick to the egg surface. Hence, option B is correct answer.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

A female gland corresponding to prostate gland of males is

  1. Bartholin's gland

  2. Bulbourethral gland

  3. Clitoris

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The prostate gland in males contributes to seminal fluid. The female equivalent, often cited as having similar embryological or functional roles, is the Skene's gland (paraurethral gland), not Bartholin's or Bulbourethral glands.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Accessory glands associated with genital organs of female are
(a) Vestibular or Bartholin's
(b) Cowper's
(c) Ampullary
(d) Vesicular

  1. a, b

  2. a only

  3. b, c

  4. d only

  5. c only
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The female external genitalia contains vulva, Bartholin's gland, and clitoris. Further vulva contains mons pubis, labia majora, and labia minora. Bartholin's gland help in lubrication of vagina and clitoris is a tiny finger-like structure which helps in stimulation.

So, the correct option is 'a only'.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Bartholin's glands are situated _________________.

  1. On the either side of Vagina in Humans

  2. On either side of Vas deferens in Humans

  3. On either side of Penis in Humans

  4. On either side of Fallopian tube in Humans
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bartholin's glands are a pair of small glands situated on each side of the vaginal opening in human females. They secrete a thick, viscid secretion for lubrication during copulation.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Oophorocystosis is

  1. Disorder of female reproductive system

  2. Stage in the production of ovum

  3. Disorder in male reproductive system

  4. Stage in the production of sperms
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oophorocystosis is the disorder of ovaries in which formation of cysts. These are small egg follicles that don't grow to ovulation and are the result of altered hormone levels.

So the correct option is 'Disorder of female reproductive system'.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Which one of these is not an accessory gland in male reproductive system?

  1. Prostate gland

  2. Seminal vesicle

  3. Cowper's gland

  4. Bartholin's gland
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bartholin's glands are present in the female reproductive system and are homologous to the bulbourethral glands in males. Their basic function is to secrete mucus and lubricate the vagina. They are basically two pea-sized glands and are also known as greater vestibular glands and are present symmetrically in the posterior region of the vaginal opening. 

The correct answer is 'Bartholin's gland'.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Which event becomes possible due to formation of egg membrane?

  1. Sperm can enter into ovum

  2. Prevents entry of other sperms in to ovum

  3. Prevents the process of fertilization so pregnancy is prevented

  4. Makes fertilization process possible and causes pregnancy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The sperm that successfully reaches the secondary oocyte is initially prevented entry by both corona radiata and the zona pellucida. When the sperm reaches the corona radiata, their motility allows the sperm to push through the cell layers. After the sperm has made a pathway through the corona radiata, they release digestive enzymes from their acrosomes to penetrate the zona pellucida. When one sperm successfully penetrates the zona pellucida and its nucleus enters the secondary oocyte, immediate changes occur in both the zona pellucida and the oocyte, so that no other sperm can enter. In essence, the zona pellucida hardens, preventing entry of other sperms into the ovum. 

So, the correct answer is option B.
Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

If mammalian ovum fails to get fertilised, which one of the following is unlikely?

  1. Corpus luteum will disintegrate.

  2. Progesterone secretion rapidly declines.

  3. Estrogen secretion increases.

  4. Primary follicle starts developing.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

If the ovum fails to get fertilised, then corpus luteum (source of progesterone and estrogen) will disintegrate resulting in a decrease in the level of progesterone and estrogen. Thus, the endometrial lining of the uterus sloughs off and menstruation begins, marking a new cycle.

Multiple choice female reproductive structure reproductive system of human hormones, homeostasis, and reproduction human physiology biology

Polar bodies

  1. Nurse the egg as it leaves the follicle

  2. Is extra chromosomal material representing the X chromosome in each female cell

  3. Orient the sperm toward the egg

  4. Allow a reduction in chromosomes while preserving all the food for one egg
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The cell that results from the asymmetric division of an oocyte is a polar body. In animals and humans, polar bodies are produced after every meiotic division. They are relatively smaller in size due to less cytoplasm compared to the gametocyte that will become the ovum. This is essential so that much of the cytoplasm is available and the chromosomal content is halved at the time of fertilization. The polar bodies will eventually degenerate.

So the correct option is 'allow a reduction in chromosomes while preserving all the food for one egg'.

Multiple choice biology animal lore types of reproduction in animals oviparous and viviparous butterfly and honey bee

Which of the following statements is not correct regarding oviparous animals?

  1. Females lay fertilised/unfertilised eggs at a safe place

  2. Development of zygote takes place outside the female's body

  3. Examples of oviparous animals are all birds, most reptiles and egg-laying mammals

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Oviparous animals are animals that lay eggs. Fertilization can be external or internal, but hatching always takes place in the external environment, never in the mother's womb. Fish, amphibians, reptiles, birds and even occasionally some mammals, are oviparous. These animals usually lay their eggs in well-protected nests, where the embryo develops inside the egg before hatching. 
So, the correct option is 'none of these'. 

Multiple choice botany caskets of life the cell structure multicellular organisms number and shape of cells

How many statements is/are correct?
(A) Premordial germ cells are $2$n in nature.
(B) Spermipgenesis occurs in epididymis.
(C) Galea capitis is cap like structure found at head of sperm.
(D) Corpus spongiosum is covered by tunica albuginea.

  1. One

  2. Two

  3. Three

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

Only statement (C) is correct. (A) Primordial germ cells are diploid (2n). (B) Spermiogenesis occurs in the seminiferous tubules, not the epididymis. (D) The corpus spongiosum is not covered by tunica albuginea (the corpora cavernosa are).

Multiple choice botany caskets of life the cell structure multicellular organisms number and shape of cells

Human egg has a volume larger than human sperm by

  1. $100,000$
  2. $10,000$
  3. $1000$
  4. $100$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In short a gamete is an egg cell (female gamete) or a sperm (male gamete). This is an example of anisogamy or heterogamy, the condition in which females and males produce gametes of different sizes. This is the case in humans, the human ovum has approximately 100,000 times the volume of a single human sperm cell. 

Hence A is the correct option.