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Diverrsity Of Plants
Beginning of paper
Plants evolved more than 430 million years ago from multicellular green
algae. By 300 million years ago, trees had evolved and formed forests, within
which the diversification of vertebrates, insects, and fungi occurred. Roughly
266,000 species of plants are now living.
The two major groups of plants are the bryophytes and the vascular
plants; ....
Middle of paper
....o groups can be demonstrated by their photosynthetic pigments
(chlorophyll a and b,) carotenoids); chief storage product (starch); cellulose-
rich cell walls (in some green algae only); and cell division by means of a cell
plate (in certain green algae only).
Major Groups
As mentioned earlier, The two major groups of plants are The bryophytes-
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| Word count: 2857 |
Page count: 11 |
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