In Ulothrix, meiosis occurs in

Options

A. Holdfast
B. Zygote
C. Zoospores
D. Cells of filament.

Answer

To answer the question "In Ulothrix, meiosis occurs in?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: Recognize that Ulothrix is a type of green algae belonging to the phylum Chlorophyta.

2. **Understand Meiosis**: Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the formation of haploid cells from diploid cells.

3. **Locate the Site of Meiosis in Ulothrix**: In the life cycle of Ulothrix, meiosis occurs specifically in the zygote. The zygote is the diploid cell formed after fertilization.

4. **Explain the Process**: After the formation of the zygote, it undergoes meiosis to produce four haploid nuclei. This process is crucial for the continuation of the life cycle and the generation of gametes.

5. **Conclude the Answer**: Based on the above points, we conclude that in Ulothrix, meiosis occurs in the zygote.

### Final Answer:
Meiosis occurs in the **zygot**e (Option B).

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