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Question

(B) In the given diagram of an ovum undergoing fertilization:$A$ represents the corona radiata,which is the outer layer of follicular cells.$B$ repres

Vedclass · Accepted Answer

$D \longrightarrow$ Perivitelline space; Prevents polyspermy

Vedclass · Answer

(B) In the given diagram of an ovum undergoing fertilization:$A$ represents the corona radiata,which is the outer layer of follicular cells.$B$ represents the secondary oocyte (ovum).$C$ represents the zona pellucida,which contains $ZP-3$ receptors that facilitate sperm binding.$D$ represents the perivitelline space,which is the space between the zona pellucida and the plasma membrane of the oocyte. Upon the entry of the first sperm,cortical granules release enzymes into this space,causing the zona pellucida to harden and preventing polyspermy.Therefore,option $B$ is the correct description.

Identify the correct option regarding the provided diagram of an ovum during fertilization.

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