How does the zona pellucida of the ovum help | vedclass

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(B) During fertilization,when the first sperm comes in contact with the $zona$ $pellucida$ layer of the ovum,it induces changes in the membrane. Speci

Vedclass · Accepted Answer

It undergoes a chemical change that prevents other sperms from binding.

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(B) During fertilization,when the first sperm comes in contact with the $zona$ $pellucida$ layer of the ovum,it induces changes in the membrane. Specifically,the cortical granules present beneath the plasma membrane of the ovum release enzymes that alter the structure of the $zona$ $pellucida$. This change,often referred to as the 'zona reaction',renders the $zona$ $pellucida$ impermeable to other sperms,thereby effectively preventing polyspermy.

How does the $zona$ $pellucida$ of the ovum help in preventing polyspermy?

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