Plants evolved from green algae during a period
between about 510 and 430 million years ago.
Of the planets that we know about, none of them
could have any plant life. It is very likely that,
somewhere in the universe, there are other planets
that do have life, and on those planets there may
be living things similar to plants, but not the
same as the plants that live on Earth.
Click Here to return to the search form.