17846.Sperm capacitation involves
Change in shape
Release of mitochondria
Removal of membrane fatty acids
Hyaluronic acid
17847.Smooth muscles lining the wall of scrotum are called
Deltoid muscles
Dartos muscles
Gluteal muscles
Latissimus dorsi muscles
17848.Site of vitellogenesis is
Secondary oocyte in fallopian tube
Primary occyte in graafian follicle
Primary spermatocyte in testis
Secondary spermatocyte in testis
17850.32-celled stage of human embryo is
Smaller than fertilized egg
Same size as fertilized egg
Two times the size of fertilized egg
Four times the size of fertilized egg
17852.Sertoli cells are found
between the seminiferous tubules
In the germinal epithelium of ovary
In the uppermost part of fallopian tube
in the germinal epithelium of seminiferous tubules
17854.Seminal plasma of human males is rich in
Glucose and calcium
DNA and testosterone
ribose and K+
Fructose and Ca2+
17857.Male Accessory Glands and their functions are listed in the table below. Match the columns and select the correct option.
| Column I(male Accessory Glands) | Column II(Functions) |
|---|---|
| (a) Seminal vesicle | (i) Secretes watery alkaline fluid for raising vaginal pH |
| (b) Prostate gland | (ii) Secretes lubricating mucus |
| (c) Bulbourethral gland | (iii) Secretes fructose & seminal fluid |
(a) - (ii), (b) - (iii), (c) - (i)
(a) - (i), (b) - (ii), (c) - (iii)
(a) - (ii), (b) - (i), (c) - (iii)
(a) - (iii), (b) - (i), (c) - (ii)
17859.Secondary sexual characters in females develop in response of hormone
Relaxin
Progesterone
Estrogen
Gonadotrofain
17860.Role of placenta is to
provide nutrition to embryo
protect embryo from shocks
act as a storage organ
convey nerve impulses
17863.Repairing of endometrium takes place during
secretory phase
ovulatory phase
pre menstrual phase
proliferative phase
17864.Correct sequence of embryo development:
Gamete → Zygote → Morula → Blastula → Gastrula
Gamete → Zygote → Blastula → Morula → Gastrula
Gamete → Neurula → Gastrula
Gamete → Neurula → Morula
17865.Temporary pairing of parents for fusion of gametes is called
Copulation
Conjugation
Communication
Coagulation
17866.Removal of both ovaries in rat will result in decreased tire of
Estrogen
Gonadotrophic releasing factor
Prolactin
Oxytocin
17867.Release of seminal fluid in the vagina of female is
Ejaculation
Implantation
Insemination
Copulation
17870.Prostate gland produces a secretion for
attracting sperms
stimulating sperm activity
inhibiting sperm activity
none of the above
17873.Primative streak which gives rise to mesoderm is formed by
Ectoderm
Endoderm
Yolk sac
Amniotic cavity
17878.Peak of LH tire occurs during
Ovulatory phase
Menstrual phase
Follicular phase
Secretory phase
17882.Ovulation in human female occurs at
beginning of proliferative phase
end of proliferative phase
middle of secretory phase
end of secretory phase
17883.Oocyte is liberated from ovary under the influence of LH, after completing
Meiosis and before liberating polar bodies
Meiosis I and before liberating polar bodies
Meiosis
Meiosis I after release of polar body
17884.Onset of menstrual cycle at the time of puberty is called
Menopause
Menarche
Menstruation
Metamerism
17885.One primary spermatocyte produces four spermatozoa but one primary oocyte produces
Four ova
One ovum
Two ova
Sixteen ova
17886.Which one of the following statement is correct?
Spermatogenesis is the formation of sperm cells.
Spermatogenesis occurs in the seminiferous tubules.
Follicle-stimulating hormone (FSH) indirectly stimulates spermatogenesis.
All of these are correct
17887.Nutritive cells of seminiferous tubules are
Sertoli cells
Leydig cells
Spermatogonial cells
Spermatocytes
17888.Network of capillaries inside the testis is present in
Rete testis
Tunica vasculasa
Seminiferous tubules
efferent duct
17889.Multicellular, multinucleated irregular mass of embryo which passes into uterine wall is
Ectoderm
Endoderm
Syncytiotrophoblast
Amnion
17892.Middle piece of mammalian sperm possesses
Mitochondria and centriole
Mitochondria only
Centriole only
Nucleus and mitochondria