SUMMARY
Plants with secondary growth have an abundance of xylem. The xylem is the tissue that provides the support for the branches, leaves, flowers, fruits, or cones in the shortest and the tallest of plants. The xylem also is the tissue that makes possible the transport of water and dissolved minerals from the roots to the tops of very tall trees. Secondary growth and transport are thus interconnected.

The primary and secondary phloem transports products of photosynthesis; fibers within the phloem also may offer some support of a plant organ.

Activity
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