Wired Faculty
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Capacitation occurs in
Rete testis
Epididymis
Vas deferens
Female Reproductive tract
D.
Female Reproductive tract
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Capacitation refers to changes in the
Sperm before fertilization
Ovum before fertilization
Ovum after fertilization
Sperm after fertilization
A.
Sperm before fertilization
Capacitation refers to activation of sperm cells before fertilisation. It involves reorganisation of molecules in the outer membrane of sperm head.
Capacitated sperm releases enzymes from their acrosomes to penetrate the cells and zona pellucida surrounding the egg.
Changes in GnRH pulse frequency in females is controlled by circulating levels of
estrogen and inhibin
progesterone only
progesterone and inhibin
estrogen and progesterone
D.
estrogen and progesterone
High levels of estrogen and progesterone give negative feedback to the hypothalamus for the release of GnRH. Thus, inhibiting the gonadotropin release.
Cycas and Adiantum resemble each other in having
seeds
motile sperms
cambium
vessels
B.
motile sperms
Multiciliated motile sperms are found in both Cycas (gymnosperm) and Adiantum or walking fern (pteridophyte). Seeds and cambium are present in Cycas (quite common in gymnosperm) but absent in pteridophytes. Vessels are absent in both.
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 sperms are transported into the vagina just after the release of the ovum in the fallopian tube
A.
the ovum and sperms are transported simultaneously to ampullary -isthmic junction of the fallopian tube
Fertilisation is possible only if the sperms and ovum are transported simultaneously at ampullary-isthmic junction of fallopian tube.
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Mock Test Series
