Sperm release lysozyme because it

Protects the sperm from bacterial attack

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Dissolves oocyte membrane

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Increases sperms motility

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Delays fertilization

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Solution

The correct option is B Dissolves oocyte membrane
The sperm's head i.e. acrosome contains an enzyme called lysozyme, which helps to dissolve the egg membrane at the point of contact, to release the sperm nucleus into the egg cell resulting in fertilization.
So, the correct answer is 'Dissolves oocyte membrane.'

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