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
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The process of mitosis in men is also known as spermatogenesis.
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The sperm and ova are together known as zygotes.
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The process of oogenesis occurs in the ovaries of females.
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Sperm cells divide through out their life span.
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.
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the ova that have not yet completed the process of oogenesis
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the points on chromosomes where ova are formed
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the male counterpart of ova
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a mature ovum
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.
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Formation of a gamete
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The male & female gametes combine their genetic material to produce an offspring with the same number of chromosomes as the parents.
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The male & female gametes combine their genetic material to create an offspring with the half number of chromosomes as the parents.
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The final phase of spermatogenesis starts.
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.
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Infundibulum
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Fimbriae
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Fallopian tubes
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Cilia
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None of the above
B
Correct answer
Explanation
The fimbriae swipe over the outside of the ovaries to pick up released ova and carry them into the infundibulum.
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Epididymis
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Ductus deferens
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Seminal vesicles
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Cowper’s glands
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Prostate gland
D
Correct answer
Explanation
Cowper’s glands secrete a thin alkaline fluid into the urethra that lubricates the urethra and neutralises acid from urine remaining in the urethra after urination.
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Epididymis
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Ductus deferens
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Seminal vesicles
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Ejaculatory duct
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Testes
A
Correct answer
Explanation
The length of the epididymis delays the release of the sperm and allows them to mature.
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It involves two different gametes from different species.
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It can take place between the same gametes.
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It is an external fertilisation.
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It occurs in the oviduct of the female.
D
Correct answer
Explanation
Fertilisation in humans occurs in the oviduct of the female.
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ovary
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seminal vesicle
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uterus
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fallopian tube
D
Correct answer
Explanation
As fertilisation between sperm and ovum takes place in the fallopian tube, the best way to prevent pregnancy is to cut the two slender tubes (fallopian tubes) and burn, clip or band the cut ends. Thus, tube ligation prevents pregnancy from occurring.
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epididymis
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vaginal fluid
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uterus
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both vaginal fluid and uterus
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both epididymis and uterus
A
Correct answer
Explanation
Sperms are decapacitated in epididymis where they mature.
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Fallopian Tube Re-canalization
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Fertility Termination Reagent
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Fallopian Tube Removal
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First Treatment of Reproduction
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Fallopian Tube Rupture
A
Correct answer
Explanation
Interventional radiologists are able to diagnose and treat blockages in the fallopian tubes with a nonsurgical procedure known as Fallopian Tube Recanalization.
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Nucleus
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Acrosome
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Mitochondria
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Ribosomes and acrosome
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Acrosome and nucleus
E
Correct answer
Explanation
Sperm consists of three parts; head, middle place and tail. Head contains nucleus and acrosome.
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Progesterone
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Hyaluronidase
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Gonadotrophin
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Teratogen
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Relaxin
B
Correct answer
Explanation
Hyaluronidase is released by the activated spermatozoa.
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Acrosome has a spherical structure used for piercing and penetrating the egg resulting in fertilisation.
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Acrosome serves as a sensory structure leading the sperm towards the ovum.
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The sperm lysin in the acrosome dissolves the egg envelope facilitating fertilisation.
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Acrosome serves no particular function.
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Acrosome nourishes the egg in the uterus.
C
Correct answer
Explanation
Acrosome possesses an enzyme called lysin, which dissolves the egg envelope and facilitates fertilisation.
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Two offsprings that have developed in the uterus at the same time but are the result of independent fertilisation of two ova.
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Two offsprings that develop in the uterus from a single fertilised ovary.
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Two offsprings that develop in the fallopian tubes till three months and then implanted in the uterus.
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Sexually undeveloped twins that are the result of fertilisation of two ova with a single sperm.
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Two offsprings that are joined together in a small area.
A
Correct answer
Explanation
Fraternal twins develop in the uterus at the same time but are the result of independent fertilisation of two ova.
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Cyclic changes in female reproductive system
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Formation of young ones through fertilisation
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Synthesis of yolk in the primary oocyte
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Formation of young ones from reproductive units
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Formation of male and female gametes
C
Correct answer
Explanation
Vitellogenesis is defined as the synthesis of yolk in the primary oocyte.