Liverworts, hornworts, and mossess together constitute

Options

A. Pteridophytes
B. Lichens and Plantae
C. Bryophyta
D. Bryopsida

Answer

To solve the question "Liverworts, hornworts, and mosses together constitute," we will analyze the options provided and determine the correct classification for these plants.

### Step-by-Step Solution:

1. **Identify the Groups**:
- Recognize that liverworts, hornworts, and mosses are all types of non-vascular plants.

2. **Understand Their Characteristics**:
- These plants typically grow in moist, shaded areas and have a simple structure. They do not have true roots, stems, or leaves, but instead have structures that perform similar functions.

3. **Classify the Plants**:
- Liverworts belong to the class Hepaticopsida.
- Hornworts belong to the class Anthocerotopsida.
- Mosses belong to the class Bryopsida.

4. **Determine the Common Phylum**:
- All three groups (liverworts, hornworts, and mosses) are classified under the phylum Bryophyta. This phylum is characterized by the presence of gametophytes as the dominant stage in their life cycle.

5. **Evaluate the Options**:
- **Option 1: Pteridophyte** - Incorrect. Pteridophytes are vascular plants like ferns.
- **Option 2: Lichens** - Incorrect. Lichens are symbiotic associations between fungi and algae.
- **Option 3: Plantae** - Incorrect as a specific classification; it is a kingdom, not a phylum.
- **Option 4: Bryophyta** - Correct. This is the phylum that includes liverworts, hornworts, and mosses.

6. **Conclusion**:
- Therefore, the correct answer is that liverworts, hornworts, and mosses together constitute the phylum **Bryophyta**.

### Final Answer:
Liverworts, hornworts, and mosses together constitute the phylum **Bryophyta**.