Why must the plant which grows directly from the fern spore be wet?

The plant that grows directly from the fern spore, known as a gametophyte, must be wet because it requires water for fertilization. Ferns reproduce via a two-stage life cycle, and the sperm produced by the gametophyte needs to swim through water to reach the egg for successful fertilization. Additionally, moisture is essential for the gametophyte's growth and development, allowing it to absorb nutrients and carry out photosynthesis effectively.