What is the correct sequence of sperm formation
spermatid, spermatocyte, spermatogonia, spermatozoa
Spermatognia, Spermatocyte, Spermatozoa, Spermatid
Spermatogonia, spermatozoa, Spermatocyte, Spermatid
Spermatogonia, spermatozoa, Spermatocyte, Spermatid
D.
Spermatogonia, spermatozoa, Spermatocyte, Spermatid
Spermatogonia --> Spermatocyte ---> Spermatid --> Spermatozoa
Spermatogonia are present on the inside wall of seminiferous tubule multiplied by mitotic division and an increase in number. Spermatocytes are some of the spermatogonia, which periodically undergo meiosis. The secondary spermatocytes undergo the second meiotic division to produce four, equal haploid spermatids, The spermatids are transformed into spermatozoa. (Sperm)
One of the legal methods of birth control is
abortion by taking an appropriate medicine
by abstaining from coitus from day 10-17 of the menstrual cycle.
by having coitus at the time of daybreak
by having coitus at the time of daybreak
Changes in GnRH pulse frequency in females is controlled by circulating levels of
estrogen and inhibin
progesterone only
progesterone and inhibin
progesterone and inhibin
Which one of the following events in not associated with ovulation in human female?
Decrease in oestradiol
Full development of Graafian follicle
Release of secondary oocyte
Release of secondary oocyte
Identify the correct statement on 'inhibin'
is produced by granulosa cells in ovary and inhibits the secretion of FSH
is produced by granulosa cells in ovary and inhibits the secretion of LH
is produced by nurse cells in testes and inhibits the secretion of LH
is produced by nurse cells in testes and inhibits the secretion of LH
Fertilisation in humans is practically feasible only if
the ovum and sperms are transported simultaneously to ampullary -isthmic junction of the fallopian tube
the ovum and sperms are transported simultaneously to ampullary -isthmic junction of the cervix
the sperm are transported into cervix within 48 hrs of releases of ovum in uterus
the sperm are transported into cervix within 48 hrs of releases of ovum in uterus
Which one of the following is wrong about Chara?
upper oogonium and lower round antheridium
Globule and nucule present on the same plant
Upper antheridium and lower oogonium
Upper antheridium and lower oogonium
Select the incorrect statement
LH and FSH triggers ovulation in ovary
LH and FSH decrease gradually during the follicular phase
LH triggers secretion of androgens from the Leydig cells
LH triggers secretion of androgens from the Leydig cells
Which of the following layers in an antral follicle is acellular?
Granulosa
Theca interna
Stroma
Stroma
