Question Detail
Question
A coat surrounding the egg that contains glycoproteins.
Correct Answer
Option B is the correct answer.
Detailed Explanation
The zona pellucida is a thick, transparent glycoprotein layer that surrounds the plasma membrane of a mammalian egg. It plays a crucial role in sperm binding and preventing polyspermy (fertilization by more than one sperm).
Hint
This is the 'shell' the sperm must penetrate to fertilize the egg.