Select correct w.r.t. diplohaplontic life cycle

Options

A. Found in Polysiphonia and Gnetum
B. Both gametophyte and sporophyte phases are present
C. Common in green algae
D. Gametic meiosis occurs

Answer

To solve the question regarding the diplohaplontic life cycle, we will analyze the statements provided and determine their correctness step by step.

### Step-by-Step Solution:

1. **Understanding Diplohaplontic Life Cycle**:
- The diplohaplontic life cycle, also known as the haplo-diplontic life cycle, involves both haploid (gametophyte) and diploid (sporophyte) stages. This cycle is characteristic of certain groups of plants, such as bryophytes and pteridophytes.

2. **Analyzing the Statements**:
- **Statement 1**: "Polysiphonia and Genitum both gametophyte and sporophyte faces are present common in green algae."
- **Analysis**: Polysiphonia is a red algae that exhibits a haplo-diplontic life cycle, while Genitum (likely referring to Gnetum) is a gymnosperm that exhibits a diplontic life cycle. Therefore, this statement is incorrect regarding the diplohaplontic life cycle.

- **Statement 2**: "Both gametophyte and sporophyte faces are present."
- **Analysis**: This statement is correct. In the diplohaplontic life cycle, both gametophyte and sporophyte stages are indeed present.

- **Statement 3**: "Common in green algae."
- **Analysis**: This statement is incorrect. While some green algae may exhibit a haplontic life cycle, the diplohaplontic life cycle is not common in green algae.

- **Statement 4**: "Gametic meiosis occurs."
- **Analysis**: This statement is also incorrect. Meiosis occurs in the sporophyte stage, leading to the production of haploid spores, not in the gametes.

3. **Conclusion**:
- The only correct statement regarding the diplohaplontic life cycle is that both gametophyte and sporophyte faces are present.

### Final Answer:
The correct statement with respect to the diplohaplontic life cycle is: "Both gametophyte and sporophyte faces are present."

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