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The Beauty of Plant Biology

Cross section of a buttercup root, stained with a dye that colors various types of cells differently depending upon their chemical characteristics. The red cross in the middle is the xylem, which transports water between the root and the shoot. The phloem — the blue circles alternating with the arms of the xylem — transport nutrients. The purple grains within the cells of the cortex, the area surrounding the central core, are starch. Lewis Feldman, a professor of plant and microbial biology, uses the slide as a teaching aid. “How could you not become a plant anatomist after seeing such a beautiful and complex design?”