Which of the folloiwng not a bryophyte ?

Options

A. Riccia
B. Marchantia
C. Sphagnum
D. Chlorella

Answer

To determine which of the following is not a bryophyte, we will analyze each option based on their classification and characteristics.

### Step 1: Understand Bryophytes
Bryophytes are non-vascular plants that include mosses, liverworts, and hornworts. They are characterized by:
- Lack of true vascular tissues (xylem and phloem).
- Presence of a dominant gametophyte stage in their life cycle, with a sporophyte stage that is dependent on the gametophyte.

### Step 2: Analyze the Options
1. **Rixia**: This is a type of liverwort, which is a group of bryophytes. Therefore, Rixia is a bryophyte.

2. **Mercantia**: This is also a liverwort and belongs to the bryophyte group. Thus, Mercantia is a bryophyte.

3. **Sphagnum**: This is a genus of mosses, which are also classified as bryophytes. Therefore, Sphagnum is a bryophyte.

4. **Chlorella**: This is a genus of green algae (Chlorophyceae) and is not a bryophyte. Chlorella lacks the characteristics that define bryophytes.

### Step 3: Conclusion
Based on the analysis, the option that is not a bryophyte is **Chlorella**.

### Final Answer:
**Chlorella** is not a bryophyte.

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