Which one of the following has haplontic life cycle

Options

A. Ustilago
B. Wheat
C. Funaria
D. Polytrichum

Answer

To determine which organism has a haplontic life cycle from the given options (Ostligo, Wheat, Funaria, and Polytrichum), we can follow these steps:

### Step-by-Step Solution:

1. **Understand Haplontic Life Cycle**:
- In a haplontic life cycle, the dominant stage is the haploid gametophyte. The only diploid stage is the zygote, which is typically single-celled and undergoes meiosis to produce haploid spores.

2. **Analyze the Given Options**:
- **Ostligo**: This organism is known to have a haplontic life cycle. The zygote undergoes meiosis, and the gametophyte is the dominant phase.
- **Wheat**: Wheat has a diplohaplontic life cycle, where both haploid and diploid stages are prominent.
- **Funaria**: Funaria, a type of moss, has a haplontic life cycle as well, but it is not the best-known example.
- **Polytrichum**: Similar to Funaria, Polytrichum also exhibits a haplontic life cycle.

3. **Identify the Correct Answer**:
- Among the options, **Ostligo** is the most recognized organism with a haplontic life cycle.

4. **Conclusion**:
- The correct answer to the question is **Ostligo**.