Question

Fertilization process in human beings is specifically due to ................

• A. the simultaneous gametogenesis
• B. the same size of gametes
• C. the fertilizin – antifertilizin reaction
• D. large sized ovum and small sized sperm

Hint:

Fertilizin is a substance on the egg that interacts with antifertilizin on the sperm, allowing fertilization to occur.

Answer 1

The Correct Option is C

Step 1: Understanding the fertilization process.
Fertilization in humans involves a complex interaction between the sperm and egg, with the fertilizin – antifertilizin reaction playing a crucial role. This reaction occurs when the fertilizin present on the egg interacts with the antifertilizin on the sperm to allow fusion.
Step 2: Analyzing the options.
(A) the simultaneous gametogenesis: Incorrect — While gametogenesis occurs simultaneously, it is not the specific factor in human fertilization.
(B) the same size of gametes: Incorrect — The size difference between sperm and egg does not directly cause fertilization.
(C) the fertilizin – antifertilizin reaction: Correct — This is the key mechanism for fertilization in humans, where the fertilizin and antifertilizin reactions enable egg and sperm fusion.
(D) large sized ovum and small sized sperm: Incorrect — While the size difference is true, it is not the primary factor in fertilization.
Step 3: Conclusion.
The correct answer is (C) the fertilizin – antifertilizin reaction, as it is the specific mechanism for fertilization in humans.