A diploid living organism develops from zygote undergoes which type of repeated cell division?

Options

A. meiosis
B. amitosis
C. mitosis
D. segmentation

Answer

To answer the question regarding the type of repeated cell division that a diploid living organism undergoes after developing from a zygote, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Zygote**:
- A zygote is the initial cell formed when a sperm cell fertilizes an egg cell. It is diploid, meaning it contains two sets of chromosomes, one from each parent.

**Hint**: Remember that a zygote is the first cell of a new organism and is diploid.

2. **Cell Division Types**:
- There are two main types of cell division: mitosis and meiosis.
- Mitosis is the process of cell division that results in two genetically identical daughter cells, maintaining the same chromosome number.
- Meiosis, on the other hand, is a reduction division that produces gametes (sperm and egg cells) with half the chromosome number (haploid).

**Hint**: Differentiate between mitosis (for growth and repair) and meiosis (for gamete formation).

3. **Cell Division After Zygote Formation**:
- After the zygote is formed, it undergoes a series of cell divisions to develop into a multicellular organism.
- Since the zygote is diploid, the type of cell division that will occur to produce more diploid cells is mitosis.

**Hint**: Focus on the fact that the organism needs to maintain its diploid state during development.

4. **Cleavage Divisions**:
- The initial divisions that occur after the zygote formation are called cleavage divisions, which are a series of rapid mitotic divisions that lead to the formation of a multicellular embryo.

**Hint**: Cleavage divisions are specifically mitotic and occur right after fertilization.

5. **Conclusion**:
- Therefore, the type of repeated cell division that a diploid living organism undergoes after developing from a zygote is mitosis.

**Final Answer**: The repeated cell division is **mitosis**.

### Summary of the Solution:
After the formation of a diploid zygote, the organism undergoes repeated cell divisions known as mitosis, specifically during the cleavage stages of development.