Zoology: Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Zoology Paper code (SEIIRKO-13-81020-Q) 

Question: Define Fertilization. Briefly enlist the events that take place during Fertilization.
Answer: Fertilization is the fusion of a sperm cell and an egg cell to form a single cell that has genetic material from both the egg and the sperm.
Events that take place during Fertilization:
1. Sperm binds to the egg and penetrates its outer layer.
2. The sperm and egg nuclei fuse, forming a single nucleus.
3. The egg is activated and begins the process of cell division.
4. The zygote begins to divide into two cells, then four cells, and so on.
5. The zygote starts to travel down the fallopian tube towards the uterus.

Zoology: Solved Previous Year Question Paper for NCERT/ CBSE Class 12th Zoology Paper code (SEIIRKO-13-81020-Q)  Read More »