Which are the amphibians in Plant Kingdom ?

Options

A. Tracheophyta
B. Bryophyta
C. Pteridophyta
D. Thallophyta.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Term "Amphibians":**
- In biology, amphibians are organisms that can live both in water and on land. This characteristic is crucial for identifying which groups of plants might be classified as amphibians.

2. **Identifying Plant Groups:**
- The question presents four options: Tracheophyta, Bryophyta, Pteridophyta, and Phthalophyta. We need to analyze which of these groups can be considered amphibians based on their habitat and reproductive needs.

3. **Analyzing Bryophyta:**
- Bryophytes, which include mosses and liverworts, are known to thrive in moist environments. They require water for their reproductive process, specifically for the movement of sperm to the egg during fertilization. This need for water for reproduction is a key characteristic of amphibians.

4. **Examining Other Groups:**
- Tracheophyta (vascular plants) and Pteridophyta (ferns) do not require water for their reproductive processes in the same way that bryophytes do. They have developed mechanisms that allow them to reproduce without the direct need for water.
- Phthalophyta is not a commonly recognized group in the context of amphibians in the plant kingdom.

5. **Conclusion:**
- Based on the analysis, Bryophyta is the only group that fits the definition of amphibians in the plant kingdom due to their dependence on water for sexual reproduction.

**Final Answer:**
- The amphibians in the Plant Kingdom are **Bryophyta**.

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