Question

Which chemical attracts sperms towards egg?

• A. Fertilizin
• B. Antifertilizin
• C. Aglutinin
• D. Thrombin

Answer 1

The correct option is A Fertilizin

The fusion of egg and sperm during fertilization leads to the formation of zygote. Mature egg secretes a chemical known as fertilizin, which is composed of glycoprotein. Sperm has on its surface a protein substance known as antifertilizin, which is composed of acidic amino acids. Fertilizin is the chemical, which attracts antifertilizin. The fertilizin and antifertilizin interacts together and this interaction makes the sperms stick to the egg surface.

So, the correct answer is option A.