April 27, 2016

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  • Bull kelp marks the tide line

    Kelp sieve tubes cooperate better

    Sieve tubes are essential for the distribution of photoassimilates in higher plants. These are networks of cells that pass carbohydrates from leaves to other parts of the plant. In some ways they do for sugars what xylem does for water, but there’s a difference. Xylem can transport water when it’s dead, sieve tubes must be […] More