What is the function layer of jelly in ovum?

The jelly layer of the ovum, often referred to as the zona pellucida, serves several important functions. It provides a protective barrier for the oocyte, aiding in the prevention of polyspermy by allowing only one sperm to penetrate during fertilization. Additionally, it plays a crucial role in the binding and activation of sperm, facilitating the fertilization process. Moreover, the zona pellucida supports early embryonic development by providing structural integrity.