Select correct one 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 answer the question regarding the diplohaplontic life cycle, we will analyze the key components of this life cycle and identify the correct statement based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Understanding Diplohaplontic Life Cycle**:
- The diplohaplontic life cycle, also known as the haplodiplontic life cycle, involves both a multicellular sporophyte (diploid) and a multicellular gametophyte (haploid) phase.

2. **Identifying Organisms**:
- The transcript mentions that this life cycle is found in organisms like Polysiphonia and Genetum. However, it is important to note that Polysiphonia exhibits a haplodiplontic life cycle, while Genetum is a gymnosperm, which typically has a diplontic life cycle.

3. **Phases Present**:
- In the diplohaplontic life cycle, both the gametophyte and sporophyte phases are present. This is a characteristic feature of this life cycle.

4. **Commonality**:
- The transcript states that the diplohaplontic life cycle is common in green algae, which is incorrect. It is more commonly associated with bryophytes and pteridophytes.

5. **Meiosis Process**:
- The video clarifies that gametic meiosis occurs in the sporophyte phase, not in the gametophyte phase. This is an important distinction as it helps in identifying the correct statements regarding the life cycle.

6. **Conclusion**:
- Based on the analysis, the correct statement regarding the diplohaplontic life cycle is that both gametophyte and sporophyte phases are present, and it is primarily seen in bryophytes and pteridophytes, not green algae.

### Final Answer:
The correct statement regarding the diplohaplontic life cycle is that both gametophyte and sporophyte phases are present, and it is commonly found in bryophytes and pteridophytes.

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