Which one of the following cells undergo reduction division in the life cycle of bryophytes ?

Options

A. Some cells of leafy plant body
B. Some cells of seta
C. Some cells of female sex organ
D. Some cells of capsule

Answer

To determine which cells undergo reduction division (meiosis) in the life cycle of bryophytes, we can follow these steps:

1. **Understand the Life Cycle of Bryophytes**: Bryophytes have a life cycle that includes both a gametophyte stage and a sporophyte stage. The gametophyte is the dominant stage, while the sporophyte is dependent on the gametophyte.

2. **Identify the Process of Reduction Division**: Reduction division, or meiosis, is the process that produces haploid spores from diploid cells. In bryophytes, this occurs in the sporophyte generation.

3. **Locate the Site of Meiosis**: In bryophytes, meiosis occurs within the sporangium, which is part of the sporophyte. The sporangium is often found in a structure called the capsule.

4. **Analyze the Options Provided**:
- Some cells of the leafy plant body: This is incorrect because the leafy part is primarily gametophyte tissue.
- Some cells of ceta: This is also incorrect, as the ceta (the stalk) does not undergo meiosis.
- Some cells of the female sex organ: This is incorrect because the female sex organ (archegonium) is involved in gamete production, not in meiosis.
- Some cells of the capsule: This is correct because meiosis occurs in the capsule of the sporophyte, producing haploid spores.

5. **Conclusion**: The correct answer is that reduction division occurs in "some cells of the capsule."

### Final Answer:
Some cells of the capsule undergo reduction division in the life cycle of bryophytes.