Which one of the following statements about human sperm is correct?

Explanation

The correct option is: b) The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation.Explanation of each option:a) Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation:This statement is not accurate. While the acrosome is a structure located at the head of the sperm and plays a crucial role in fertilization, it does not have a conical pointed structure for piercing the egg. The acrosome contains enzymes that aid in breaking down the outer layer of the egg, but it does not physically penetrate the egg.b) The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation:This is the correct option. The acrosome is a specialized vesicle located at the tip of the sperm's head. It contains enzymes called sperm lysins, which are capable of breaking down the protective outer layer (zona pellucida) of the egg. When the sperm reaches the egg during fertilization, the enzymes are released, facilitating the penetration of the egg's protective layer, thus allowing the sperm to fertilize the egg.c) Acrosome serves as a sensory structure leading the sperm towards the ovum:This statement is not accurate. The acrosome is primarily responsible for releasing enzymes that help the sperm penetrate the egg's protective layer, as explained in option (b). It does not serve as a sensory structure guiding the sperm towards the egg.d) Acrosome serves no particular function:This statement is not accurate either. The acrosome is a crucial and specialized structure in the sperm that plays a significant role in the process of fertilization. It contains enzymes that are essential for breaking down the egg's protective layer, as mentioned in option (b), to facilitate fertilization.In summary, option (b) is correct. The acrosome in human sperm contains sperm lysins that dissolve the egg envelope (zona pellucida), which is necessary for facilitating fertilization and allowing the sperm to enter the egg.