CBSE Questions for Class 12 Medical Biology Human Reproduction Quiz 2 - MCQExams.com

Sertoli cells are regulated by a pituitary hormone, known as
  • Prolactin
  • LH
  • FSH
  • GH
In the male reproductive system, sperms are concentrated in the
  • Rete testis
  • Epididymis
  • Vas deferens
  • Seminal vesicle
Supporting cells found between the germinal epithelium of testes are called as
  • Interstitial cells of Leydig
  • Sertoli cells
  • Granular cells
  • Phagocytes
The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is 
  • Spermatocyte$$\rightarrow$$Spermatogonia $$\rightarrow$$Spermatid$$\rightarrow$$Sperms
  • Spermatogonia $$\rightarrow$$Spermatocyte $$\rightarrow$$Spermatid $$\rightarrow$$Sperms
  • Spermatid $$\rightarrow$$Spermatocyte $$\rightarrow$$ Spermatogonia$$\rightarrow$$Sperms
  • Spermatogonia$$\rightarrow$$Spermatid $$\rightarrow$$Spermatocyte$$\rightarrow$$Sperms
The nutritive medium for the ejaculated sperms is given by 
  • Seminal fluid
  • Vaginal fluid
  • Uterine lining
  • Fallopian tube
Cells of Leydig are found in 
  • Kidney of rabbit
  • Kidney of frog
  • Testis of frog
  • Testis of rabbit
The function of prostate gland is:-
  • Storage of semen
  • To provide nourishment to sperms
  • To provide DNA to sperms
  • Release of hormones
In humans, at the end of the first meiotic division, the male germ cells differentiate into
  • Spermatids
  • Spermatogonia
  • Primary spermatocytes
  • Secondary spermatocytes
Stroma is a term applied to 
  • Gall stone.
  • Ovarian follicles.
  • Connective tissue in which Graafian follicles are embedded.
  • Connective tissue surrounding the seminiferous tubules.
Which hormone level reaches peak during luteal phase of menstrual cycle?
  • Luteinizing hormone
  • Progesterone
  • Follicle stimulating hormone
  • Estrogen
In the ovum of rabbit, Graafian follicle has
  • Oogonial cells
  • Corpus luteum
  • Corpus albicans
  • Theca externa, theca interna, oocyte and follicle cells
Sertoli cells are found in 
  • Kidney of rabbit
  • Ovary of frog
  • Testes of rabbit
  • Ovary of rabbit
Which one of the following is the correct matching of the events occurring during menstrual cycle?
  • Ovulation : LH and FSH attain peak level and sharp fall in the secretion of progesterone.
  • Proliferative phase : Rapid regeneration of myometrium and maturation of Graafian follicle.
  • Development of corpus luteum : Secretory phase and increased secretion of progesterone.
  • Menstruation : Breakdown of myometrium, when ovum is not fertilised.
The mammalian follicle was first described by
  • Von Baer
  • De Graaf
  • Robert Brown
  • Spallanzani
In most mammals, the testes are located in scrotal sac for 
  • Spermatogenesis
  • Sex differentiation
  • More space to visceral organs
  • Independent functioning of kidney
Which of the following is the endocrine tissue of testes?
  • Epidermis
  • Inguinal canal
  • Leydig cells
  • Spermatic cord
Graafian follicle is found in 
  • Thyroid of mammal
  • Ovary of frog
  • Testis of mammal
  • Ovary of mammal
Embryonic body form stage is characterised by 
  • Basic body plan emerging
  • Miniature adult features
  • Stage of development resembling other species
  • Tissues not fully formed
The branch of embryology, which concerns with the study of abnormal embryonic development is termed as 
  • Gerontology
  • Teratology
  • Embryology
  • None of the above
Which layer develops first during embryonic development?
  • Ectoderm
  • Mesoderm
  • Endoderm
  • Both B and C
The only human system that is derived from all the three germ layers is 
  • Digestive system
  • Excretory system
  • Respiratory system
  • Nervous system
The rupture of the Graafian follicle and the release of ovum occurs under the influence of which hormone? 
  • Luteinizing Hormone
  • Follicular Stimulating Hormone
  • Inhibin 
  • Testosterone 
The cyclic period of sexual activity in non-human female mammals is called as
  • Menstruation
  • Luteinization
  • Oogenesis
  • Estrous
The rule of embryonic development was given by 
  • von Baer
  • Haeckel
  • Wallace
  • Morgan
In mammals, the oestrogens are secreted by the Graafian follicle from its 
  • External theca
  • Internal theca
  • Zona pellucida
  • Corona radiata
In the 28 days human ovarian cycle, the ovulation takes place typically on 
  • Day 1 of the cycle
  • Day 5 of the cycle
  • Day 14 of the cycle
  • Day 28 of the cycle
Ovulation in the human female normally takes place 
  • At the beginning of the proliferative phase
  • At the end of the proliferative phase
  • At the mid secretory phase
  • Just before the end of the secretory phase
The development of eye in vertebrate embryology is studied under 
  • Notogenesis
  • Neurogenesis
  • Mesogenesis
  • Organogenesis
At menopause, there is a rise in urinary excretion of
  • LH
  • STH
  • FSH
  • Both A and C
Cumulus covers 
  • Ovary
  • Ovum
  • Embryo
  • All of these
Onset of menstruation is due to 
  • Fall in level of progesterone
  • Increase in level of progesterone
  • Increase in level of FSH
  • None of these
Development of secondary sexual characters in females are controlled by
  • Oestrogen
  • Oxytocin
  • Progesterone
  • Androgen
Maximum growth of human feotus is done in 
  • 4$$^{th}$$ month
  • 2$$^{nd}$$ month
  • 6$$^{th}$$ month
  • 8$$^{th}$$ month
The cleavage is such method of divisions of fertilized egg in which the egg 
  • Does not divide but only increase in size
  • Divides repeatedly but without growth
  • Divides repeatedly and grows
  • None of the above
Which part of the ovary in mammals acts as an endocrine gland after ovulation 
  • Vitelline membrane
  • Graafian follicles
  • Stroma
  • Germinal epithelium
The third phase in the development of a mammal is 
  • Cleavage
  • Gastrulation
  • Gametogenesis
  • Fertilization
What changes are observed in the uterus subsequent to implantation of young embryo?
  • The uterine wall thickens.
  • Placenta develops.
  • Both A and B.
  • The uterine wall shrinks.
In markets, eggs of birds are available but never of dogs, because:
  • Birds lays eggs but dogs do not.
  • Bird's eggs are large but dog's eggs are very small.
  • Bird's eggs are covered but dog's eggs are not.
  • Bird's eggs are strong but eggs of dogs are not.
The developing embryo shows 
  • No growth
  • Auxetic growth
  • Accretionary growth
  • Multiplicative growth
The correct sequence of organs in the male reproductive system for transport of sperms is
  • Testis, vas deferens, urethra
  • Testis, ureter, urethra
  • Testis, urethra, ureter
  • Testis, vas deferens, ureter
Seminal plasma in human males is rich in
  • Fructose and calcium
  • Glucose and calcium
  • DNA and testosterone
  • Ribose and potassium
The future development of the embryo that would take place after it gets embedded in the uterus is
  • Division, formation of placenta, growth
  • Formation of placenta, growth, division
  • Growth, formation of placenta, division
  • Maturation
What is the correct sequence of sperm formation ?
  • Spermatid, spermatocyte, spermatogonia, spermatozoa
  • Spermatogonia, spermatocyte, spermatozoa, spermatid
  • Spermatogonia, spermatozoa, spermatocyte, spermatid
  • Spermatogonia, spermatocyte, spermatid, spermatozoa
Which of the following is not the case of epimorphosis?
  • Formation of sperms from small clumps of cells
  • Regeneration of tail in a lizard
  • Replacement of severed arm in starfish
  • Replacement of limb in salamander
A change in the amount of yolk and its distribution in the egg will effect :
  • Fertilization
  • Formation of zygote
  • Pattern of cleavage
  • Number of blastomeres produced
The immature male germ cells undergo division to produce sperms by the process of spermatogenesis. Which of the following sentences is correct regarding this process?
  • The primodial germ cells always undergo meiotic division.
  • The primodial germ cells divide only by mitotic division.
  • Secondary spermatocytes undergo second meiotic division only.
  • Both B and C
Which of the following is a haploid cell?
  • Nerve cell
  • Ovum
  • Bone cell
  • Smooth muscle cell
Ovulation in female human beings stops approximately around the age of
  • 45-50
  • 23-25
  • 80-90
  • 10-15
Tunica albuginea is the covering around ________.
  • Ovary
  • Testis
  • Kidney
  • Both A and B
Both hens and frogs are ______________ animals.
  • Oviparous
  • Viviparous
  • Ovoviviparous
  • Hens oviparous and frog ovoviviparous
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