Select incorrect for haplontic life cycle `:`

Options

A. sporophytic generation is represented only by the one-celled zygote
B. there are no free-living sporophytes
C. haploid spores divide mitotically and form the gametophyte
D. the dominant, photosynthetic phase in such plants is the free-living sporophyte

Answer

To solve the question regarding the incorrect statement for the haplontic life cycle, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Haplontic Life Cycle**:
- In a haplontic life cycle, the dominant phase is the haploid gametophyte. The only diploid structure is the zygote, which is formed after the fusion of gametes.

2. **Identify the Key Features**:
- The zygote is a single-celled diploid structure.
- The zygote undergoes meiosis to produce haploid spores.
- The haploid spores germinate to form the gametophyte, which is the dominant phase.

3. **Analyze the Statements**:
- **Statement 1**: "Sporophytic generation is represented only by the one cell zygote."
- This is correct, as the zygote is the only diploid structure in this life cycle.
- **Statement 2**: "Spores mitotically divide and form gametophyte."
- This is also correct, as haploid spores develop into gametophytes.
- **Statement 3**: "Dominant photosynthetic phase in such plant is free living sporophyte."
- This statement is incorrect because, in a haplontic life cycle, the dominant phase is the gametophyte, not a free-living sporophyte.

4. **Select the Incorrect Statement**:
- Based on the analysis, the incorrect statement is the third one, which claims that the dominant photosynthetic phase is a free-living sporophyte.

5. **Conclusion**:
- The correct answer is option number 4, which corresponds to the incorrect statement about the haplontic life cycle.