How did plants evolve?

Question

How did they evolve? Did they start in the water and get onto land? Did they start on land and how did the seeds get to the bottom?

Answer 1

Short answer: Originated in the oceans, subsequently invaded terrestrial habitats. In that light, your question about seeds "getting to the bottom" does not make much sense.

Long answer: There are many relevant Internet resources out there for you to read. Start with these:

http://curriculum.calstatela.edu/courses...

http://sci.waikato.ac.nz/evolution/plant...

http://www.clas.ufl.edu/users/pciesiel/g...

http://www.ucmp.berkeley.edu/plants/plan...