Question

Which secretions are produced by spermatozoa at the time of fertilization?

• A. Fertilizin and spermlysin
• B. Only spermlysin
• C. Fertilizin and antifertilizin
• D. Antifertilizin and spermlysin

Answer 1

Answer: (D)

Antifertilizin and spermlysin

• At the time of the fertilization, the spermatozoa produce certain enzymes and proteins that enable it to penetrate the walls of the ova.
  
• One of the proteins is the antifertilizin that reacts with the fertilizin protein present n the zona pellucida layer. The fertilizin- antifertilizin reaction make sure that the sperm of the correct species is mating with the ova
  
• Sperlysins are the class of enzymes that the sperm secretes to degrade the wall of the ovary. hyaluronidase is among it.
  

So, the correct option is 'Antifertilizin and sperm-lysin'