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Zona pellucida disintegrates just:...

Zona pellucida disintegrates just:

A

after fertlization

B

before fertilization

C

midway during cleavage

D

after completion of cleavage

Text Solution

Verified by Experts

The correct Answer is:
d
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Name the stage at which zona pellucida envelop disintegrates

Zona pellucida is retained for sometime after fertilization.

Knowledge Check

  • Zona pellucida is secreted by

    A
    Primary oocyte
    B
    Secondary ooctye
    C
    Corona radiata
    D
    Ootid
  • Zona pellucida is synthesized by:-

    A
    Follicle
    B
    Oocyte
    C
    Both follicle cell and oocyte
    D
    Granulosa cells
  • Assertion : Zona pellucida is glycoproteinous in nature and dissolved during the event of implantation . Reason : The blastocyst , along with zona pellucida enters in decidua of uterus to protect itself from uterine acidic medium .

    A
    If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
    B
    If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
    C
    If Assertion is True but the Reason is False .
    D
    If both Assertion & Reason are False.
  • Similar Questions

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    Why is zona pellucida retained around the egg till it reaches uterus?

    (a) Draw a diagram of the structure of a human ovum surrounded by corona radiata. Label the following parts : (i) Ovum, (ii) Plasma Membrane, (iii) Zona Pellucida (b) State the function of Zona Pellucida.

    A : in morula stage the cells divide without any increase in size R : zona pellucida remains intact till cleavage is completed

    Zona pellucida firstly appears in

    A reaction fo granules content which harden the zona pellucida and ensures sure block to polyspermy is