[wolverine876]

Why do we assume land and trees, and everything required for them?

[andrewflnr]

Trees, for one, have evolved convergently several times. You could arguably include those giant early fungus, too. Given land, trees will follow.

Land mostly requires that your planet doesn't have too much water. Plate tectonics helps, but I'm not sure it's required.

[wolverine876]

> Trees, for one, have evolved convergently several times.

They evolved here. The whole question is how much their existence depends on Earth's specific environment, genetics, etc.

[psadri]

I think there are lots of worlds that don’t have dry land. I doubt they would develop advance technology - hard to build fire to melt metals. But perhaps nature will find another way?

[deafpolygon]

At one point, this planet was covered in mushrooms!