Homework Help

  describe 5 evolutionary trends observed as we move through the plant phyla onto land 

user profile pic

user5265955 | (Level 3) eNoter

Posted April 25, 2013 at 3:46 AM via web

dislike 0 like

  describe 5 evolutionary trends observed as we move through the plant phyla onto land 

1 Answer | Add Yours

user profile pic

orchid101 | College Teacher | (Level 1) Associate Educator

Posted April 28, 2013 at 3:39 PM (Answer #1)

dislike -1 like

Due to lack of actual evidence, it is even now difficult to decide whether origin of cells and of later groups of organisms evolved monophyletically or polyphyletically. Without involving in this problem, best evidences at present suggest that the first cell or cells probably arose some two billion years after the origin of earth, that is perhaps three billion years ago.

 What point on the earth may be considered as beginning of the life, it not yet clear or known. But it is believed that cell is the major product of the first few billion years and cell is considered as being alive.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes