CSS :: Forestry Environment
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Mechanical tissues and xylem are highly reduced in Hydrilla because:
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[A]. |
Water provides the support and there is no problem for the absorption and conduction of water | [B]. |
Otherwise the weight of these tissues would drown the plant
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[C]. |
Of the anaerobic conditions created by submergence | [D]. |
Otherwise translocation of food would have been interrupted |
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