Question

Write brief notes on the following:
Implantation

Hint:

Implantation is a crucial process for the continuation of pregnancy, and autogamy helps organisms reproduce in isolated environments.

Answer 1

Implantation.
Implantation is the process by which the embryo embeds itself into the lining of the uterus after fertilization. This is a critical step in pregnancy. The steps involved are:
1. Blastocyst formation: After fertilization, the zygote divides into a ball of cells, known as a blastocyst.
2. Attachment: The blastocyst attaches to the endometrial lining of the uterus.
3. Invasion: The trophoblast cells of the blastocyst secrete enzymes that allow it to burrow into the uterine wall.
4. Nutrient supply: Once implanted, the embryo receives nutrients from the mother via the placenta, which forms during implantation.
Conclusion.
Autogamy allows for reproduction without a mate, ensuring species survival in specific conditions.