While hiking through a forest of aspens during the fall, you notice that the trees seem to be growing in groves. All of the trees within each grove appear to be displaying the same fall foliage colors, but other groves are displaying different colors. Which of the following would NOT be a likely explanation for these observations?

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    The fall foliage colors are the result of the unmasking of photosynthetic pigments that were present in the leaves all along.
    The addition of pigments, such as the anthocyanins, are responsible for some of the pigments displayed by these aspens.
    The fall foliage colors (oranges, yellows, reds) are the result of the breakdown and absorption of photosynthetic pigments, such as chlorophyll, that were present during the spring and summer.
    Adjacent deciduous trees produce hormones that travel through the soil to nearby trees which triggers simultaneous leaf abscission, resulting in similar fall colors in these groves.
asked May 19, 2013 in Biology by anonymous
    

1 Answer

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Adjacent deciduous trees produce hormones that travel through the soil to nearby trees which triggers simultaneous leaf abscission, resulting in similar fall colors in these groves.
answered May 20, 2013 by Bioshare ~Top Expert~ (34,070 points)

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