Question

Part of sperm involved in penetrating egg during fertilization is

• A. Tail
• B. Acrosome
• C. Head
• D. Neck

Answer 1

The correct option is B Acrosome

The part of sperm involved in penetrating egg during fertilization is acrosome which is a cap-like structure over the anterior half of the sperm's head. When the sperm reaches the egg, the membrane surrounding the acrosome fuses with the plasma membrane of the oocyte and the contents of the acrosome are released. The contents include the enzyme hyaluronidase that digests hyaluronic acid in the corona radiata of the ovum and thereby allowing fertilization to take place.

So, the correct answer is option B.