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Over time plants evolved and many of their features changed. These changes were due to the fact that some of them evolved from single celled organisms to multicellular aquatic organisms to terrestrial based organisms.

Using NAMED EXAMPLES from the three levels stated above:

(i) DESCRIBE how these organisms changed and evolved and

(ii) EXPLAIN why these changes were necessary for survival of the organism.

USE the following guidelines for discussion

· Alternation of generation

· Dependency on water for reproduction