Pteridophytes differ from bryophytes in having:

Options

A. motile male gametes
B. alternation of generations
C. antheridia
D. vascular tissue

Explanation

To determine how pteridophytes differ from bryophytes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Classification of Plants**:
- The plant kingdom (Plantae) is divided into various groups based on specific characteristics. Two of these groups are bryophytes and pteridophytes.

2. **Identify Characteristics of Bryophytes**:
- Bryophytes are non-vascular plants, meaning they lack vascular tissues (xylem and phloem).
- They have a simple body structure, often described as thallus-like, and they possess structures that resemble roots (rhizoids), stems, and leaves, but these are not true roots, stems, or leaves.

3. **Identify Characteristics of Pteridophytes**:
- Pteridophytes, on the other hand, are vascular plants. This means they have specialized tissues (xylem and phloem) for the conduction of water and nutrients.
- They have a more complex structure compared to bryophytes and can grow larger due to the presence of these vascular tissues.

4. **Analyze the Options Given**:
- Option A: "motile male gametes" - This is not a distinguishing feature as both groups have motile gametes.
- Option B: "alteration of generations" - This process occurs in both bryophytes and pteridophytes, so it is not a distinguishing factor.
- Option C: "enceridia" - These structures are found in both groups, hence not a distinguishing feature.
- Option D: "vascular tissues" - This is the key distinguishing feature, as pteridophytes have vascular tissues while bryophytes do not.

5. **Conclusion**:
- The primary difference between pteridophytes and bryophytes is that pteridophytes have vascular tissues.

### Final Answer:
Pteridophytes differ from bryophytes in having **vascular tissues**.

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