Fertilizin is emitted by:

Explanation

Fertilizin is a glycoprotein that plays a role in species-specific sperm-egg recognition. It is emitted by the eggs. Let's go through each option:A. Immature eggs: Immature eggs, or oocytes, do not emit fertilizin. Fertilizin is typically produced by mature eggs and is involved in sperm-egg recognition during fertilization.B. Mature eggs: Mature eggs are the correct answer. Fertilizin is emitted by mature eggs and plays a crucial role in attracting and binding sperm during the fertilization process.C. Sperms: Sperm cells do not emit fertilizin. They have specific proteins on their surface that interact with fertilizin on the egg's surface to facilitate fertilization.D. Polar bodies: Polar bodies are not involved in emitting fertilizin. They are byproducts of the egg's maturation process and do not play a direct role in fertilization.Correct Answer: B. Mature eggsSummary:Fertilizin, a glycoprotein involved in sperm-egg recognition during fertilization, is emitted by mature eggs.Immature eggs (Option A) do not emit fertilizin.Sperm (Option C) do not emit fertilizin but have proteins on their surface that interact with it.Polar bodies (Option D) are not involved in emitting fertilizin..