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Which one of the following ensures only one sperm can fertilise an ovum1)secretions of the acrosome2)secretions of the zona Pellucida3)secretion of corona radiata4)amupullary isthmic reaction

sheema , 8 Years ago
Grade 12th pass
anser 1 Answers
Simran Vinaik
Zona pellucida penetration by one sperm brings about changes in Zona pellucida. The egg can be fertilized by many sperm if the zona pellucida is removed.
So ans is 2)
Last Activity: 8 Years ago
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