Bryophytes are popularly called amphibian plants because `:`

Options

A. They grow on land
B. They require external free water sexual reproduction
C. They are aquatic
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding Bryophytes**: Bryophytes are a group of non-vascular plants that include mosses and liverworts. They are often found in damp or humid environments.

2. **Definition of Amphibian**: The term "amphibian" typically refers to organisms that can live both in water and on land. This characteristic is crucial for understanding why bryophytes are called amphibian plants.

3. **Habitat of Bryophytes**: Bryophytes can grow on land, but they thrive in moist conditions. They are often found in shaded, damp areas where they can absorb moisture from the environment.

4. **Reproductive Needs**: One of the key reasons bryophytes are called amphibian plants is that they require external water for sexual reproduction. This means that during their reproductive process, they need water to facilitate the movement of sperm to the egg.

5. **Conclusion**: Therefore, bryophytes are referred to as amphibian plants because they can live on land but are dependent on water for their reproductive processes.

**Final Answer**: Bryophytes are popularly called amphibian plants because they require external free water for sexual reproduction.

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