Given below is the diagram of human ovum surrounded by a few sperms. Observe the diagram and answer the questions that follows :
The capacitation of sperms plays a significant role in the process of fertilisation in humans. Which of the following events are associated with the process of capacitation? I. Large quantity of Ca+2 ions enter the sperm to enhance the permeability of the acrosome. II. Antifertilisin reacts with the fertilisin protein. III. Membrane covering the sperm head and acrosome gets removed.
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