Question

why do seeds need wet soil to germinate into a big tree prove it

Answer 1

Actually seeds require moisture and not soil to germinate A seed completely insidewet soil will not germinate.The seedling won't survive without water and sunlight, it needs to time its emergence perfectly. Seeds need water and heat. Too cold or too hot and they won't germinate, which makes sense - if conditions aren't right for the seedling to grow, it's going to wait until things get better.

Answer 2

Water is life, especially for seeds. Water activates the germination cycle of the seed by causing the seed coat/hull to swell which in turn hydrates the cell of the seed. Once hydrated, the hull is softened and will then allow the cell to expand and then break through the protective outer layer of the seed. This then is the initiation of the growth process.