A. Spermatid, spermatagonia, spermatazoa
B. Spermatagonia, Spermatocyte, Spermatozoa, Spermatid
C. Spermatogonia, Spermatazoa, Spermatocyte, Spermatid
D. Spermatogonia, Spermatocyte, Spermatid, Spermatazoa
# Which of the following is not the function of placenta?
A. facilitates supply of oxygen and nutrients to embryo
B. secretes oestrogen
C. facilitates removal of carbon dioxide and waste material from embryo
D. secretes oxytocin during parturition
# The part of Fallopian tube closest to the ovary is:
A. isthmus
B. infundibulum
C. cervix
D. ampulla
# If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from:
A. epididymis to vas deferens
B. ovary to uterus
C. vagina to uterus
D. testes to epididymis
# Sertoli cells are found in:
A. ovaries and secrete progesterone
B. adrenal cortex and secrete adrenaline
C. seminiferous tubules and provide nutrition to germ cells
D. pancreas and secrete cholecystokinin
# Which of the following statements is false in respect of viability mammalian sperm?
A. Sperm is viable only upto 24 hours
B. Survival of sperm depends on the pH of the medium and is more active in alkaline medium
C. Viability of sperm is determined by its motility
D. Sperms must be must be concentrated in a thick suspension
# The Leydig cells as found in the human body are the secretory source of:
A. progesterone
B. intestinal mucus
C. glucagon
D. androgens
# The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?
A. Fourth month
B. Fifth month
C. Sixth month
D. Third month
# The tests in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for:
A. escaping any possible compression by the visceral organs
B. providing more space for the growth of the epididymis
C. providing a secondary sexual feature for exhibiting the male sex
D. maintaining the scrotal temperature lower than the internal body temperature
# Select the correct option describing gonadotropin activity in a normal pregnant female.
A. High level of FSH and LH stimulates the thickening of the endometrium
B. High level of FSH and LH facilitates the implantation of the embryo
C. High level of HCG stimulates the synthesis of estrogen and progesterone
D. High level of HCG stimulates the thickening of endometrium
# The shared terminal duct of the reproductive and urinary system in the human male is:
A. ureter
B. vas deferens
C. vasa efferentia
D. urethra
# Seminal plasma in human males is rich in:
A. Fructose and calcium
B. Glucose and calcium
C. DNA and testosterone
D. Ribose and potassium
# Which of the following statements about morula in humans is correct?
A. It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA
B. It has far less cytoplasm as well as less DNA in an uncleaved zygote
C. It has more or less equal quantity of cytoplasm and DNA
D. It has more cytoplasm and more DNA than an uncleaved zygote
# The main function of mammalian corpus luteum is to produce:
A. estrogen only
B. progesterone
C. human chorionic gonadotropin
D. relaxin only
# Signals for parturition originate from:
A. both placenta as well as fully developed foetus
B. oxytocin released from maternal pituitary
C. placenta only
D. fully developed foetus only
# Menstrual flow occurs due to lack of:
A. progesterone
B. FSH
C. oxytocin
D. vasopressin
# Which one of the following statements about human sperm is correct?
A. Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation
B. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
C. Acrosome serves as a sensory structure leading the sperm towards the ovum
D. Acrosome serves no particular function
# A change in the amount of yolk and its distribution in the egg will affect:
A. fertilisation
B. pattern of cleavage
C. number of blastomeres produced
D. fertilisation
# Vasa efferentia are the ductules leading from:
A. testicular lobules to rete testis
B. rete testis to vas deferens
C. vas deferens to epididymis
D. epididymis to urethra
# During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called:
A. anamorphosis
B. pattern formation
C. organiser phenomena
D. axis formation
# Gray crescent is the area:
A. at the point of entry of sperm into ovum
B. just opposite to the site of entry of sperm into ovum
C. at the animal pole
D. at the vegetal pole
# Blastopore is:
A. opening of neural tube
B. opening of gastrocoel
C. future anterior end of embryo
D. found in blastula
# At the end of first meiotic division, male germ cell differentiates into:
A. secondary spermatocyte
B. primary spermatocyte
C. spermatogonium
D. spermatid
# Bartholin's gland are situated:
A. on either side of vagina in humans
B. on either side of vas deferens in humans
C. on either sides of the head of some amphibians
D. at the reduced tail end of birds
# Cleavage in mammalian egg is:
A. equal holoblastic
B. unequal holoblastic
C. superficial meroblastic
D. discoidal meroblastic
# If mammalian ovum fails to get fertilised, which one of the following is unlikely?
A. Corpus luteum will disintegrate
B. Estrogen secretion further decreases
C. Primary follicle starts developing
D. Progesterone secretion rapidly declines
# Fertilisins are emitted by:
A. immmature eggs
B. mature eggs
C. sperms
D. polar bodies
# In a human ovarian cycle of 28 days, ovulation occurs on:
A. day 1
B. day 5
C. day 14
D. day 28
# Which part of ovary in mammals acts as an endocrine gland after ovulation?
A. Graffian follicle
B. Stroma
C. Germinal epithelium
D. Vitelline membrane
# After ovulation, graffian follicle regresses into:
A. corpus luteum
B. corpus callosum
C. corpus albicans
D. corpus atresia
# Middle piece of mammalian sperm possesses:
A. Mitochondria and centriole
B. Mitochondria only
C. Centriole only
D. Nucleus and Mitochondria
# Ovulation in the human female normally takes place during the menstrual cycle:
A. at the mid secretory phase
B. just before the end of the secretory phase
C. at the beginning of the proliferative phase
D. at the end of the proliferative phase
# Which extra-embryonic membrane in humans prevents desiccation of the embryo inside the uterus?
A. Chorion
B. Allantois
C. Yolk sac
D. Amnion
# Which one of the following is the most likely reason of not occurring regular mestruation cycles in females?
A. Fertilsation of the ovum
B. Maintenance of the hypertrophical endometrial lining
C. Maintenance of high concentration of sex hormone in the blood stream
D. Retention of well developed corpus luteum
# What is true for cleavage?
A. Size of embryo increases
B. Size of cells decreases
C. Size of cells increases
D. Size of embryo decreases
# Cells become variable in morphology and function in different regions of the embryo is called:
A. differentiation
B. metamorphosis
C. organisation
D. rearrangement
# Eye lens is formed from:
A. Ectoderm
B. Mesoderm
C. Endoderm
D. Both A and B
# In telolecithal egg, the yolk is found:
A. all over the egg
B. on the side
C. both the sides
D. at centre
# What is true about cleavage in fertilised egg of human?
A. Meroblastic
B. Starts when egg reaches uterus
C. Starts in Fallopian tube
D. It is identical to normal mitosis
# Freshly released human egg has:
A. one Y-chromosome
B. one X-chromosome
C. two X-chromosomes
D. both A and B
# Ovulation occurs under the influence of:
A. LH
B. FSH
C. estrogen
D. progesterone
# Meroblastic cleavage is a type of ______ division.
A. horizontal
B. partial/parietal
C. total
D. spiral
# Extrusion of second polar body from egg nucleus occurs:
A. after entry of sperm but before completion of fertilisation
B. after completion of fertilisation
C. before entry of sperm
D. without any relation of sperm entry
# Acrosome reaction in sperm is triggered by:
A. Capacitation
B. release of lysin
C. influx of Na+
D. release of fertilisin
# Human eggs are:
A. alecithal
B. microlecithal
C. mesolecithal
D. macrolecithal
# How many sperms are formed from a secondary spermatocyte?
A. 4
B. 8
C. 2
D. 1
# Termination of gastrulation is indicated by:
A. obliteration of blastocoel
B. obliteration of archenteron
C. closure of blastopore
D. closure of neural tube
# Egg is liberated from ovary in:
A. secondary oocyte stage
B. primary oocyte stage
C. oogonial stage
D. mature ovum stage
# Gonads develop from embryonic:
A. Ectoderm
B. Mesoderm
C. Endoderm
D. Both B and C
# Extra-embryonic membranes of the mammalian embryo are derived from:
A. inner cell mass
B. trophoblast
C. formative cells
D. follicle cells
# During cleavage, what is true about cells?
A. Nucleocytoplasmic ratio remains unchanged
B. size does not increase
C. there is less consumption of oxygen
D. the division is like meiosis
# Location and secretion of Leydig's cells are:
A. Liver - Cholesterol
B. Ovary - Estrogen
C. Testis - Testosterone
D. Pancreas - Glucagon
# Cu ions released from copper-releasing Intra Uterine Devices (IUDs):
A. make uterus unsuitable for implantation
B. increase phagocytosis of sperms
C. suppress sperm motility
D. prevent ovulation
# Assisted reproductive technology, IVF involves transfer of:
A. ovum into the fallopian tube
B. zygote into the Fallopian tube
C. zygote into the uterus
D. embryo with 16 blastomeres into the fallopian tube
# Tubectomy is a method of sterilisation in which:
A. Small part of the fallopian tube is removed or tied up
B. Ovaries are removed surgically
C. Small part of vas deferens is removed or tied up
D. Uterus is removed surgically
# Artificial insemination means:
A. trasnfer of sperms of a healthy donor to a test tube containing ova
B. transfer of sperms of husband to a test tube containing ova
C. artificial introduction of sperms of a healthy donor into the vagina
D. introduction of sperms of healthy donor directly into the ovary
# One of the legal methods of birth control is:
A. by abstaining from coitus from day 10-17 of the menstrual cycle
B. by having coitus at the time of daybreak
C. by a premature ejaculation during coitus
D. abortion by taking an appropriate medicine
# The test tube baby program employs which one of the following techniques?
A. Intra-cytoplasmic sperm injection (ICSI)
B. Intra uterine insemination (IUI)
C. Gamete intra fallopian transfer (GIFT)
D. Zygote intra fallopian transfer (ZIFT)
# Which of the following cannot be detected in a developing foetus by amniocentesis?
A. Klinefelter's syndrome
B. Sex of the foetus
C. Down's syndrome
D. Jaundice
# Amniocentesis is a process to:
A. determine any disease in the heart
B. know about the disease in the brain
C. determine any hereditary disease in the embryo
D. All of the above
# Test tube baby is one who:
A. is born out of artificial insemination
B. has undergone development in a test tube
C. is born out of the technique in vitro
D. has been developed without fertilisation
# In vitro fertilisation is a technique which involves transfer of which of the following into the fallopian tube?
A. Embryo only, upto 8 cell stage
B. Either zygote or early embryo upto 8 cell stage
C. Embryo of 32 cell stage
D. Zygote only
# The permissible use of the technique amniocentesis is for:
A. detecting sex of the unborn fetus
B. artificial insemination
C. transfer of embryo into the uterus of a surrogate mother
D. detecting any genetic abnormality
# Medical termination of pregnancy (MTP) is considered safe up to how many weeks of pregnancy?
A. Eight weeks
B. Twelve weeks
C. Eighteen weeks
D. Six weeks
# In a population, unrestricted reproductive capacity is called:
A. biotic potential
B. fertility
C. carrying capacity
D. birth rate
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