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Earn 100

Which of the following events makes zona pellucida thick and blocks its receptors for sperm binding and checks polyspermy?

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Important Questions on Human Reproduction

MEDIUM
Biology>Reproduction>Human Reproduction>Fertilization in Humans
Draw a labelled diagram of a mature human ovum with at least four labellings.
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Receptors for sperm binding in mammals are present on:
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Describe the physico-chemical events that take place during fertilization in humans.
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
The embryo with 8 to 16 blastomeres is called a:
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Capacitation refers to changes in the:
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
During fertilization, zona pellucida of the ovum is dissolved by this enzyme released by the sperm
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Which of the following layers in an antral follicle is acellular?
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
The amnion of mammalian embryo is derived from
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Meiotic division of the secondary oocyte is completed
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Biology>Reproduction>Human Reproduction>Fertilization in Humans

Statement I : Penetration of sperm into ovum is a chemical process
Statement II : Acrosome of sperm secretes hyaluronidase which dissolves vitelline membrane of ovum

The correct option among the following is

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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Several hormones like hCG, hPL, estrogen, progesterone are produced by
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Capacitation occurs in
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Select the correct option describing gonadotropin activity in a normal pregnant female:
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
During oogenesis in mammals, the second meiotic division occurs
MEDIUM
Biology>Reproduction>Human Reproduction>Fertilization in Humans
What is "Capacitation" of sperms ?
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Select the incorrect statement:
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
Hormones secreted by the placenta to maintain pregnancy are
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
During fertilization, acrosome of sperm releases
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Biology>Reproduction>Human Reproduction>Fertilization in Humans
In human females, meiosis-II is not completed until?
MEDIUM
Biology>Reproduction>Human Reproduction>Fertilization in Humans
Fertilization in humans is practically feasible only if: