ComfortablyNumb
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Plants see you. In fact, plants monitor their visible environment all the time. Plants see if you come near them; they know when you stand over them. They even know if you’re wearing a blue or a red shirt. They know if you’ve painted your house or if you’ve moved their pots from one side of the living room to the other. Plants perceive light because they have color receptors for blue and red light. Color receptors tell the plant the length of days and seasons. They use this information to judge when to bloom, when leaves should change and when to go dormant for the winter. When a lima bean plant is eaten by beetles, it responds in two ways. The leaves that are being eaten by the insects release a mixture of volatile chemicals into the air, and the flowers (though not directly attacked by the beetles) produce a nectar that attracts beetle-eating arthropods. Simply touching an arabidopsis leaf [related to mustard and cabbages] results in a rapid change in the genetic makeup of the plant . . . An arabidopsis plant that’s touched a few times a day in the lab will be much squatter, and flower much later, than one that’s left to its own accord. Simply stroking its leaves three times a day completely changes its physical development. (1)
Marshall, Perry. Evolution 2.0 (p. 118). BenBella Books, Inc.. Kindle Edition.
1.Chamovitz, D. (2012). What a Plant Knows: A Field Guide to the Senses. New York: Macmillan.
Marshall, Perry. Evolution 2.0 (p. 118). BenBella Books, Inc.. Kindle Edition.
1.Chamovitz, D. (2012). What a Plant Knows: A Field Guide to the Senses. New York: Macmillan.