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
B
Correct answer
Explanation
From 100 primary oocytes, the number of secondary oocytes formed is 200.
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fusion of cytoplasm of sperm and ovum
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fusion of nuclei of sperm and ovum
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fusion of two adult individuals
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conjugation
B
Correct answer
Explanation
Syngamy is fusion of nuclei of sperm and ovum. It is also called fertilization.
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ovary
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oviduct
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uterus
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vagina
B
Correct answer
Explanation
The Oviduct is the tube that links the ovary to the uterus and which the ovulated oocyte travels down to become fertilised by sperm present in the female tract. It is also refered to as the Fallopian tube, Uterine tube or Ovarian tube.
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fertilization of the egg by two male gametes
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fertilisation of two eggs in the same embryo sac by two sperms brought by one pollen tube
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fertilisation of the egg and the central cell by two sperms brought by different pollen tubes
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fertilisation of the egg and the central cell by two sperms brought by the same pollen tube
D
Correct answer
Explanation
Double fertilisation is the unique feature of flowering plants, whereby from a single pollen grain, the two sperm nuclei within the pollen tube fuse with different nuclei within the embryo sac of the ovule. Fusion of one sperm with egg cell nucleus forms zygote and the fusion of other sperm with diploid secondary nucleus forms triploid primary endosperm nucleus.
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Vas deferens
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Spermatocytes
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Seminiferous tubules
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None of the above
C
Correct answer
Explanation
Seminiferous tubules are located within the testes, and are the specific location of meiosis, and the subsequent creation of gametes, namely spermatozoa.
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checks the entry of more sperms after fertilisation
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checks the entry of antigens in ovum
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represents the left out tail of the sperm
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represents the plasma membrane of the sperm
A
Correct answer
Explanation
Fertilization membrane is the membrane that forms around a fertilised ovum and prevents penetration by additional spermatozoon.
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Sperniatogonial cells
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Germinal epithelial cells
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Secondary spermatocytes
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Primary spermatocytes
C
Correct answer
Explanation
Secondary spermatocytes are haploid whereas primary spermatocytes are diploid.
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diploid
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triploid
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tetraploid
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haploid
D
Correct answer
Explanation
Secondary spermatocytes and spermatids are haploid.
A
Correct answer
Explanation
Each testis has about 250 testicular compartments.
C
Correct answer
Explanation
Spermatogenesis begins during puberty due to the increased secretion of GnRH.
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Gamete Interfallopian Transfer
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Gamete Interfallopian Tubules
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Gamete Intrafallopian Transfer
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Gamete Intrafallopian Tubules
C
Correct answer
Explanation
GIFT stands for “Gamete Intrafallopian Transfer”.
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ovary
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uterus and cervix
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the ampullary isthmic junction of the fallopian tube
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oviducal funnels and uterus
C
Correct answer
Explanation
In rabbit, man and other placental mammals ferilization of ovum takes place in the ampullary isthmic junction of the fallopian tube.
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coitus
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capacitation
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insemination
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spermiation
B
Correct answer
Explanation
Capacitation is the process by which spermatozoa become capable of fertilizing an ovum.
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vasectomy
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cryptorchidism
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impotency
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tubectomy
B
Correct answer
Explanation
Failure of descent of testis in scrotal sacs is called cryptorchidism.
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tail
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head
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acrosome
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middle piece
D
Correct answer
Explanation
Mitochondria of a sperm occur in its middle piece.