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Lichens
Beginning of essay
LICHEN. On places like tree trunks, rocks, old boards, and also on the ground grow strange splotches of various-colored plant life called . They are of great scientific interest because they are not single plants; instead, each lichen is formed of a fungus and an alga living together so intimately ....
Middle of essay ....ch greater amounts of water. Some of them even grow on rocks in streams. Fruticose thrive in humid regions, where they are able to absorb water from the air. In desolate areas, when growth conditions are at their best and there is little competition, will expand over vast areas. have a peculiar and effective method of reproducing. Upon the surface of the body there are often minute granules that give it a dusty appearance. Each of these granules, called soredia, consists of a few cells of the.... |
Number of words: 571 |
Approximate pages: 3 |
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