In which of the following fertilization or reproduction is possible without water-

Options

A. Ulothrix
B. Dryopteris
C. Funaria
D. Cycas

Answer

To determine which of the given options allows for fertilization or reproduction without water, we need to analyze each option based on their classification and reproductive methods.

### Step-by-Step Solution:

1. **Identify the Organisms**: The options given are Eulotrix, Dryopteris, Funeria, and Sychus. We need to identify what each of these organisms is.

2. **Eulotrix**: This is a type of green algae. Algae typically reproduce through water-mediated fertilization, as they release gametes into the water where fertilization occurs. Thus, Eulotrix requires water for fertilization.

3. **Dryopteris**: This is a genus of ferns, which are classified as pteridophytes. Pteridophytes also require water for reproduction because their sperm must swim through water to reach the egg for fertilization. Therefore, Dryopteris requires water for fertilization.

4. **Funeria**: This is a genus of mosses, which belong to the bryophytes. Similar to algae and ferns, mosses also require water for fertilization. The sperm of mosses swims through water to fertilize the egg. Hence, Funeria requires water for fertilization.

5. **Sychus**: This is a type of gymnosperm. Gymnosperms are unique in that they do not require water for fertilization. They typically use wind for pollination, and fertilization can occur without the presence of water. Therefore, Sychus does not require water for fertilization.

### Conclusion:
Among the options provided, **Sychus** is the only organism that allows for fertilization or reproduction without water.