CBSE Questions for Class 12 Medical Biology Human Reproduction Quiz 9 - MCQExams.com

Epididymis lies between
  • Rete testis and vasa efferentia
  • Vas deferens and vasa efferentia
  • Vas deferens and ejaculatory duct
  • Seminal tubules and rete testis
In human females, menstrual cycle ceases around $$50$$ years of age. It is termed as
  • Menopause
  • Menarche
  • Diapause
  • None of the above
Which is false about viability of mammalian sperm?
  • Sperm is viable for only 24 hours.
  • Sperm viability is determined by its motility.
  • Sperms must be concentrated in thick suspension.
  • It depends upon pH of medium as sperm is more active in alkaline medium/
Spermatogenesis changes.
  • Spermatogonium into primary spermatocyte
  • Primary spermatocyte into secondary spermatocyte
  • Secondary spermatocyte into spermatid
  • All the above
Number of autosomes in human primary spermatocyte is
  • $$22$$
  • $$23$$
  • $$44$$
  • $$46$$
Which is not a function of Sertoli cells?
  • Nurse cells to sperms
  • Secreting hormone inhibin
  • Forming a manchette
  • Secreting testicular fluid for sperm transport
During spermatogenesis, the first meiotic division occurs in
  • Sertoli cells
  • Spermatids
  • Spermatozoans
  • Primary spermatocytes
  • Secondary spermatocytes
Primary spermatocyte differs from spermatogonium in
  • Size and volume
  • Size of chromosomes
  • DNA content
  • Number of chromosomes
Spermatogenesis occurs in
  • Vasa deferentia
  • Epididymis
  • Seminiferous tubules
  • Penis
Secretory phase of human menstrual cycle is also called
  • Luteal phase and lasts for $$6$$ days
  • Luteal phase and lasts for $$13$$ days
  • Follicular phase and lasts for $$13$$ days
  • Follicular phase and lasts for $$6$$ days
Which type of germ cells contain 23 chromosome?
  • Spermatogonia
  • Primary spermatocytes
  • Secondary spermatocytes
  • None of the above
Hormone responsible for spermatogenesis is
  • Androgen
  • Progesterone
  • Testosterone
  • None of these
In mammals, Sertoli cells occur in
  • Germinal epithelium of testis
  • Germinal epithelium of ovary
  • Medulla of kidney
  • Adrenal cortex
In mammals, spermatogenesis is stimulated by
  • MSH
  • TSH
  • ADH
  • FSH
Identify the correct match.
Accessory glandFunction
(i)Seminal vesicle(a)Lubricates vagina
(ii)Prostate gland(b)Provides energy, coagulation of sperms
(iii)Cowper's gland(c)Neutralises acidity of vagina
  • i-b, ii-c, iii-a
  • i-c, ii-b, iii-a
  • i-a, ii-c, iii-b
  • i-c, ii-a, iii-b
Match the lists and find the correct option.
III
aLeydig cellsICarry sperms from seminiferous tubules to vasa efferentia
bSertoli cellsIINourish sperms
cRete testisIIISecretion testosterone
dCorpus luteumIVSecretion of progesterone
VSecretion of estrogen
  • a-II, b-III, c-V, d-IV
  • a-III, b-II, c-I, d-IV
  • a-III, b-II, c-V, d-IV
  • a-II, b-III, c-I, d-IV
Human primary spermatocyte contains
  • $$22$$ autosomes and a X-chromosome
  • $$22$$ autosomes and a Y-chromosome
  • $$22$$ autosomes and a X or Y-chromosome
  • $$22$$ pairs of autosomes and XY chromosomes
If spermatogenesis proceeds rapidly, inhibin is released. Inhibin reduces secretion of
  • Luteinizing hormone
  • Follicle stimulating hormone
  • Testosterone
  • Interstitial cell stimulating hormone
Arrange male reproductive accessory organs based on the amount of secretion poured into the urethra.
(I)   Prostate gland
(II)  Seminal vesicles
(III) Bulbourethral glands.
  • i $$>$$ ii $$>$$ iii
  • iii $$>$$ ii $$>$$ i
  • ii $$>$$ iii $$>$$ i
  • ii $$>$$ i $$>$$ iii
Secondary spermatocytes undergo second meiotic division during spermatogenesis to produce
  • Spermatozoa
  • Diploid spermatids
  • Primary spermatocytes
  • Spermatogonia
  • Haploid spermatids
Component of seminal vesicles that provides a forensic test for rape is?
  • Phosphorycholine
  • Prostaglandin
  • Frustose
  • Citric acid
The first sign of growing human foetus in uterus may be noticed by
  • Listening heart sound
  • Movement of foetus
  • Development of limbs and digits
  • None of the above
Each secondary spermatocyte after second meiotic division produces
  • Four haploid spermatids
  • Only one haploid spermatid
  • Two haploid spermatids
  • Two diploid spermatids
  • Four diploid spermatids
Arrange in correct sequence the structures formed during spermatogenesis.
(a) Spermatogonia
(b) Secondary spermatocyte
(c) Spermatogonial stem cells
(d) Primary spermatocyte
(e) Spermatid
  • c-d-b-a-e
  • c-a-d-b-e
  • a-b-c-d-e
  • c-d-a-b-e
Which of the following statement is wrong?
  • Sertoli cells provide nutrition to the developing male germ cells.
  • Leydig cells synthesis and secrete androgens.
  • Secretions of acrosome help the sperm to enter the cytoplasm of the ovum.
  • Secondary spermatocytes are diploid.
  • Fluid filled cavity in tertiary follicle is called antrum.
During spermatogenesis, the diploid cells are
  • Primary spermatocyte and spermatogonium
  • Spermatogonium and spermatid
  • Secondary spermatocyte and spermatid
  • Primary spermatocytes and spermatid
Identify the complete and correct sequence in the passage of spermatozoa.
  • Seminiferous tubules $$\rightarrow$$ Rete testis $$\rightarrow$$ Vasa efferentia $$\rightarrow$$ Vas deferens $$\rightarrow$$ Epididymis $$\rightarrow$$ Ejaculatory duct $$\rightarrow$$ Urethra $$\rightarrow$$ Vagina of female
  • Seminiferous tubules $$\rightarrow$$ Rete testis $$\rightarrow$$ Vasa efferentia $$\rightarrow$$ Epididymis $$\rightarrow$$ Vas deferens $$\rightarrow$$ Ejaculatory duct $$\rightarrow$$ Urethra $$\rightarrow$$ Vagina of female
  • Seminiferous tubules $$\rightarrow$$ Rete testis $$\rightarrow$$ Vasa efferentia $$\rightarrow$$ Epididymis $$\rightarrow$$ Urethra $$\rightarrow$$ Vagina of female
  • Seminiferous tubules $$\rightarrow$$ Rete testis $$\rightarrow$$ Vasa efferentia $$\rightarrow$$ Ejaculatory duct $$\rightarrow$$ Vagina of female
Identify the correct passage of spermatozoa in the male human reproductive system.
(a) Vas deferens
(b) Epididymis
(c) Urethra
(d) Vasa efferentia
(e)  Ejaculatory duct
(f)  Seminiferous tubules.
  • b$$\rightarrow$$ d $$\rightarrow$$ f $$\rightarrow$$ c $$\rightarrow$$ a $$\rightarrow$$ e
  • b $$\rightarrow$$ c $$\rightarrow$$ e $$\rightarrow$$ f $$\rightarrow$$ a $$\rightarrow $$ d
  • f$$\rightarrow$$ d $$\rightarrow$$ b $$\rightarrow$$ a $$\rightarrow$$ e $$\rightarrow$$ c
  • f$$\rightarrow$$ b $$\rightarrow$$ a $$\rightarrow$$ d $$\rightarrow$$ e $$\rightarrow$$ c
Spermatozoa not ejaculated are reabsorbed in the
  • Ejaculatory duct
  • Urethra
  • Vas efferens
  • Vas deferens
The progesterone level rises in which phase of menstrual cycle?
  • Menstrual phase
  • Proliferative phase
  • Secretory phase
  • Maturation phase
The hormone which acts on Sertoli cells and stimulate the process of spermiogenesis is
  • LH
  • FSH
  • Androgen
  • GnRH
Which of the following contains haploid set of chromosomes?
  • Spermatogonium
  • Primary spermatocyte
  • Secondary spermatocyte
  • Primordial germ cell
Barr body is absent in normal human female in
  • Skin cells
  • Leucocytes
  • Oogonia
  • Secretory cells.
The nuclear structure observed by Hanking in $$50\%$$ of the insect sperms after spermatogenesis was.
  • X-body
  • Autosome
  • Y-chromosome
  • Nucleolus
  • Polar body
Permanent surgical method for birth control in male human beings is
  • Hysterectomy
  • Dialysis
  • Tubectomy
  • Vasectomy
Read the following statements 
1) The male sex accessory ducts include rete testis, vasa efferentia ,epididymis and vas deferens  
2) Fallopian tube , uterus and vagina constitute the female accessory ducts-
3) The part of the oviduct closer to the ovary is fimbriae
4) Isthumus shows a narrow lumen and it joins with the ovary of the above statements
  • all are false
  • four are false
  • Three are false
  • one is false
Which gland of male reproductive system provides sugar/fructose for sperm motility?
  • Seminal vesicle
  • Prostate
  • Cowper's
  • Tyson's
Sixty percent of semen is produced by
  • Bartholin's gland
  • Cowper's glands
  • Seminal vesicles
  • Prostate gland
The  stage when all the body parts can be identified is known as _____________.
  • Zygote
  • Foetus
  • Embryo
  • Infant
The function of the secretion of prostate gland is to _______________.
  • Stimulate sperm activity
  • Attract sperm
  • Inhibit sperm activity
  • Nourish sperm
Brush bordered epithelium is found in ____________.
  • Fallopian tube
  • Small intestine
  • Stomach
  • Trachea
Menstrual cycle is not seen in ____________.
  • Humans
  • Orangutans
  • Lemurs
  • Chimpanzees
Which part of the sperm provides energy for its movement?
  • Tail
  • Middle piece
  • Nucleus
  • Non of above
Refer to the given showing levels of different hormones $$(P-S)$$ during menstrual cycle in a normal woman.
Identify the hormones $$P-S$$ and select the incorrect statement regarding them.
771337_c54c46ea7de0427d954755c2a494ea40.png
  • $$R$$ stimulates the ovarian follicles to produce estrogen during proliferative phase while $$Q$$ stimulates the corpus luteum of the ovary to secrete progesterone
  • Menstrual phase is caused by the reduction of $$P$$ and $$S$$
  • Proliferative phase is characterised by increased production of $$S$$ whereas secretory phase is charaterised by increased production of $$P$$
  • In males. $$Q$$ causes spermatogenesis whereas $$R$$ stimulates Leyding's cells to secrete testosterone
The most important characteristic of living organisms is _____________.
  • Multiplication
  • Movements
  • Growth
  • Protoplasm
A thin layer of cytoplasm is found in middle piece of sperm is known as ____ ?
  • Fourchette
  • Nebenkern sheath
  • Acrosome
  • Manchette
State whether the following statements are true or false .
The alecithal eggs show meroblastic type of cleavage.
  • True
  • False
When spermatogonia accumulates large amount of nutrient and chromatin material and increases in size, it is known as 
  • Spermatids
  • Spermatogonium
  • Sperm
  • Primary spermatocytes
Which one of the following is formed during the process of spermatogenesis?
  • Sperms
  • Ova
  • Estrogen
  • Corpus luteum
If the epididymis is removed from a person body then what will happen?
  • Early maturation of sperm
  • Late maturation of sperm
  • Sperm will be incapable for fertilisation
  • Life span of sperm will increase
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