The embryogenesis is the process of the development of an embryo from the zygote. During this process zygote undergoes

Options

A. Meiosis
B. Cleavage only
C. Cell differentiation only
D. Both cleavage and cell differentiation

Answer

### Step-by-Step Text Solution:

1. **Understanding Embryogenesis**:
- Embryogenesis refers to the development of an embryo from a zygote. This process is crucial for the formation of a new organism.

2. **Identifying Key Processes**:
- During embryogenesis, the zygote undergoes several key processes. The two primary processes involved are cleavage and cell differentiation.

3. **Cleavage**:
- Cleavage is the first process that occurs after fertilization. It involves a series of rapid mitotic divisions of the zygote, resulting in smaller cells called blastomeres. This process does not increase the overall size of the embryo but increases the number of cells.

4. **Cell Differentiation**:
- Following cleavage, the cells begin to differentiate. Cell differentiation is the process by which the cells produced from cleavage undergo changes to become specialized cells, forming various tissues and organs in the developing embryo.

5. **Conclusion**:
- Therefore, during embryogenesis, the zygote undergoes both cleavage and cell differentiation. This combination of processes is essential for the proper development of the embryo.

6. **Final Answer**:
- The correct answer to the question is that during the process of embryogenesis, the zygote undergoes both cleavage and cell differentiation.