Sat September 26, 2009 By: Ayush Gaur

why is phloem placed above the xylem?

Expert Reply
Wed September 30, 2009

This is not always the case. Usually the stem, phloem is located exterior to the xylem. But phloem in the leaf is located below the xylem. In certain cases like stem of Yucca, the phloem is surrounded by the xylem.

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