Water is not required in the fertilization of

Options

A. Dryopteris
B. Selaginella
C. Vallisneria
D. Pisum/Maize.

Answer

To determine which of the given options does not require water for fertilization, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which plant does not require water for fertilization. We need to evaluate each option based on their reproductive processes.

2. **Analyze Option A: Dryotaris**:
- Dryotaris is a type of bryophyte.
- Bryophytes have motile gametes that require water for fertilization.
- Therefore, **water is required** for fertilization in Dryotaris.

3. **Analyze Option B: Slagenella**:
- Slagenella is also a bryophyte.
- Similar to Dryotaris, it has motile gametes that need water for fertilization.
- Hence, **water is required** for fertilization in Slagenella.

4. **Analyze Option C: Valisneria**:
- Valisneria is a submerged hydrophyte.
- In Valisneria, pollination occurs through water, where male flowers float on the surface and pollinate female flowers underwater.
- Thus, **water is required** for fertilization in Valisneria.

5. **Analyze Option D: Pisum (Pea Plant)**:
- Pisum is a bisexual plant, meaning it has both male and female reproductive structures.
- It can self-pollinate without the need for any external agents, including water.
- Therefore, **water is not required** for fertilization in Pisum.

6. **Conclusion**:
- Based on the analysis, the correct answer is **Pisum**, as it does not require water for fertilization.

### Final Answer:
**Pisum** is the plant for which water is not required in fertilization.

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