How many of following event occurs in fallopian tube ?
A) Fertilisation
B) Cleavage
C) Morulation
D) Organogenesis

Options

A. One
B. Two
C. Three
D. Four

Answer

To solve the question of how many of the following events occur in the Fallopian tube, we will analyze each event one by one:

1. **Fertilization**:
- Fertilization is the process where a sperm cell merges with an egg cell to form a zygote. This event typically occurs in the Fallopian tube, specifically in the ampulla region.
- **Conclusion**: Fertilization occurs in the Fallopian tube.

2. **Cleavage**:
- Cleavage refers to the series of rapid cell divisions that occur after fertilization, leading to the formation of a multicellular embryo. Cleavage begins in the Fallopian tube as the fertilized egg (zygote) travels toward the uterus.
- **Conclusion**: Cleavage also occurs in the Fallopian tube.

3. **Morulation**:
- Morulation is the stage following cleavage, where the embryo forms a solid ball of cells called a morula. This stage occurs after the embryo has moved into the uterus.
- **Conclusion**: Morulation does not occur in the Fallopian tube; it occurs in the uterus.

4. **Organogenesis**:
- Organogenesis is the process of organ formation that occurs after the morula stage, during which the embryo develops its organs. This process takes place in the uterus.
- **Conclusion**: Organogenesis does not occur in the Fallopian tube; it occurs in the uterus.

**Final Answer**: The events that occur in the Fallopian tube are A) Fertilization and B) Cleavage. Therefore, the total number of events that occur in the Fallopian tube is **2**.