CBSE Questions for Class 12 Medical Biology Human Reproduction Quiz 8 - MCQExams.com

How many sperms are formed from a secondary spermatocyte?
  • $$4$$
  • $$8$$
  • $$2$$
  • $$1$$
How many sperms are produced from one primary spermatocyte?
  • $$8$$
  • $$6$$
  • $$2$$
  • $$4$$
Human embryo completes development in
  • 180 days
  • 300 days
  • 250 days
  • 280 days
Body of embryo is formed from
  • Trophoblast
  • Inner cell mass
  • Outer cell mass
  • Trophoectoderm
The superficial blastula is the characteristic of
  • Birds
  • Reptiles
  • Insects
  • Annelids
Polar bodies develop during the formation of
  • Spermatogonia
  • Ova
  • Oogonia
  • Sperms
What are the diploid stages in gametogenesis?
  • Spermatogonia and spermatia
  • Spermatogonia and primary spermatocytes
  • Spermatogonia and sperm
  • Primary spermatocytes and secondary spermatocytes
Spermiogenesis changes
  • Spermatogonium to primary spermatocyte
  • Primary spermatocyte to secondary spermatocyte
  • Secondary spermatocyte to spermatid
  • Spermatid to sperm
Spermatogenesis and sperm differentiation are under the control of
  • FSH
  • LH
  • Testosterone
  • Parathyroid hormone
At the end of first meiotic division, male germ cell differentiates into
  • Secondary spermatocyte
  • Primary spermatocyte
  • Spermatogonium
  • Spermatid
Which accessory genital gland occurs only in male mammal?
  • Cowper's gland
  • Bartholin gland
  • Prostate gland
  • Pineal gland
Seminiferous tubules occur in
  • Liver
  • Kidney
  • Ovary
  • Testis
Which of the following is correct?
  • Menstrual cycle is present in all mammals.
  • Menstrual cycle is present in all primates.
  • Estrus cycle occurs in all mammals.
  • Most mammals are ovoviviparous.
Fertilized ovum is transplanted in uterus after
  • $$1$$ day
  • $$7$$ day
  • $$8$$ day
  • $$10$$ day
What would happen if vasa deferentia of man are cut?
  • Sperm are non-nucleate
  • Spermatogenesis does not occur
  • Semen is without sperms
  • Sperms are non-motile
Enzyme hyaluronidase is synthesised in
  • Head of sperm
  • Golgi bodies of acrosome
  • Lysosome of acrosome
  • Tail of sperm
Loss of reproductive capacity in women after age of 45 years is called
  • Mensturation
  • Ageing
  • Menopause
  • Menarche
Leydig cells secrete
  • Oestrogen
  • Progesterone
  • Testosterone
  • Corticosterone
In $$28$$ day human ovarian cycle, ovulation occurs on.
  • Day $$1$$
  • Day $$5$$
  • Day $$14$$
  • Day $$28$$
Graafian follicle contains.
  • Many oocytes
  • Many sperms
  • A single oocyte
  • Site for egg fertilization
Which one of the following is correct?
  • Meiosis I occurs in primary spermatocyte
  • Meiosis I occurs in secondary spermatocyte
  • Meiosis I takes place in spermatids
  • Meiosis II occurs in spermatids
Human female reaches menopause at the age of about
  • $$25$$ years
  • $$35$$ years
  • $$50$$ years
  • $$70$$ years
Fixing up of blastocyst in the wall of uterus is
  • Impregnation
  • Placentation
  • Implantation
  • Fertilization
Which one is correct for mammalian testis?
  • Graffian follicles, Sertoli cells, Leydig cells
  • Graffian follicles, Sertoli cells and Seminiferous tubules
  • Graffian follicles, Leydig's cells and Seminiferous tubules
  • Sertoli cells, Seminiferous tubules, Leydig cells
Release of seminal fluid in the vagina of female is?
  • Ejaculation
  • Implantation
  • Insemination
  • Copulation
Sperms are stored and nourished inside
  • Cowper's glands
  • Epididymis
  • Seminiferous tubules
  • Vasa efferentia
Which one is not associated with gametogenesis?
  • Formation of ova
  • Formation of spermatids
  • Release of ova
  • Change of spermatid to spermatozoa
In the urinogenital system one of the following part is present in males and not in females.
  • Urethra
  • Fallopian tube
  • Vagina
  • Vas deferens
Function of sertoli cells is to
  • Nourish sperms
  • Form the sperms
  • Help in fertilization
  • Synthesis of hormones
Which of the following process occurs first in embryo?
  • Neurogenesis
  • Notogenesis
  • Hepatogenesis
  • Cardiogenesis
Production of sperms from spermatids is
  • Spermiogenesis
  • Spermatogenesis
  • Oogenesis
  • Gametogenesis
Nutritive cells of seminiferous tubules are
  • Leydig cells
  • Sertoli cells
  • Atretic follicular cells
  • Spermatogonial cells
  • Chromaffin cells
Choose the correct combination for labelling of part of seminiferous tubule.
684474_38baa6ec6d1c42dfa70e6e77b42358a2.jpg
  • a- sertoli cell, b-spermatogonium, c-spermatid, d-interstitial cell, e-spermatozoa
  • a-interstitial cell, b-spermatid, c-spermatogonium, d-spermatozoa, e-sertoli cell
  • a-interstitial cell, b-spermatogonium, c-spermatid, d-spermatozoa, e-sertoli cell
  • a-interstitial cell, b-spermatids, c-spermatozoa, d-spermatogonium, e-sertoli cell
Arrange the events in human female reproductive cycle.
a - Secretion of FSH
b - Growth of corpus luteum
c - Growth of follicle and oogenesis
d - Ovulation
e - Sudden increase in level of LH
  • a $$\rightarrow$$ c $$\rightarrow$$ e $$\rightarrow$$ d $$\rightarrow$$ b
  • c $$\rightarrow$$ a $$\rightarrow$$ d $$\rightarrow$$ b $$\rightarrow$$ e
  • a $$\rightarrow$$ d $$\rightarrow$$ c $$\rightarrow$$ e $$\rightarrow$$ b
  • b $$\rightarrow$$ a $$\rightarrow$$ c $$\rightarrow$$ d $$\rightarrow$$ e
Which provides nutrition to maturing sperms?
  • Leydig cell
  • Scrotum
  • Epididymis
  • Sertoli cells
LH surge occurs during
  • Menstrual phase
  • Beginning of proliferative phase
  • Just before end of proliferation phase
  • At the middle of the cycle
Function of Sertoli cells is controlled by
  • Estrogen
  • FSH
  • Testosterone
  • ACTH
Spermatogenesis is formation of
  • Ovary
  • Ovum
  • Sperm
  • Zygote
Spermatogonia develop through division by
  • Amitosis
  • Mitosis
  • Meiosis I
  • Meiosis II
Process of the maturation of spermatids into spermatozoa is known as
  • Spermatogenesis
  • Spermiogenesis
  • Oogenesis
  • Spermiation
Which of the following is the correct sequence in embryo development?
  • Cleavage, gastrulation, blastulation
  • Blastulation, cleavage, gastrulation
  • Cleavage, blastulation, gastrulation
  • Gastrulation, blastulation, cleavage
What is the number of sperms formed from four spermatocytes?
  • $$4$$
  • $$1$$
  • $$16$$
  • $$32$$
In human, the unpaired male reproductive structure is
  • Testis
  • Seminal vesicle
  • Bulbourethral gland
  • Prostate
  • Vas deferens
Which gland secretes alkaline mucus in urethra to neutralise the acidity of urine?
  • Prostate gland
  • Cowper's gland
  • Seminal vesicles
  • Preputial glands
Which of the following statement is false?
  • Menarche is beginning of menstruation
  • Menstruation is shedding of endometrial lining
  • Menopause occurs in the beginning of puberty
  • Ovulation occurs under high titre of LH
Vasa efferentia lead from
  • Rete testis to vas deferens
  • Vas deferens to epididymis
  • Epididymis of urethra
  • Testicular lobules to rete testis
In a regulatory cycling human female, which can be root cause of menstrual failure?
  • Fertilization of ovum
  • Maintenance of hypertrophical endometrial lining
  • Maintenance of high titre of sex hormones
  • Retention of well developed corpus luteum
Which one is initiated by secretion of trophoblast?
  • Blastulation
  • Implantation
  • Cleavage
  • Gastrulation
Seminal plasma of humans is rich in
  • Fructose and certain enzymes, poor in Ca$$^{2+}$$
  • Fructose, Ca$$^{2+}$$ and certain enzymes
  • Fructose, Ca$$^{2+}$$ but no enzymes
  • Glucose, certain enzymes but no Ca$$^{2+}$$
Which is correctly matched?
  • Menstruation - Breakdown of myometrium and ovum not fertilized
  • Ovulation - LH, and FSH attain peak level, sharp fall in the secretion of progesterone
  • Development of Corpus luteum - Secretory phase and increased secretion of progesterone
  • Proliferative Phase - Rapid regeneration of myometrium and maturation of Graafian follicle
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