heliotropic

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If you ever come across heliotropic or apheliotropic aerial roots on

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Definitions (2)

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  1. Turning or tending to turn toward the sun; specifically, of, pertaining to, or characterized by heliotropism.

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Examples (9)

  • If you ever come across heliotropic or apheliotropic aerial roots on —  More Letters of Charles Darwin — Volume 2
  • This reflex process agrees in every point with the heliotropic effects of light on plant organs. —  Introduction to the Science of Sociology
  • So a tree is functionally useless, and cannot even exist without a proper supply of light and air; but, whereas it has been the custom to ascribe the heliotropic and other motions to the direct influence of those agents, I would rather suggest that the movements are to some extent due to the desire of the plant to acquire its necessaries of life. " —  Luck or Cunning?
  • Since plants possess no nerves, this identity of animal with plant heliotropism can offer but one inference -- these heliotropic effects must depend upon conditions which are common to both animals and plants. —  Introduction to the Science of Sociology
  • Loeb states, on the authority of Eigenmann, that all those forms which live in caves were adapted to life in the dark before they entered the cave, because they are all negatively heliotropic and positively stereotropic, and with these tropisms would be forced to enter a cave whenever they were put at the entrance. —  Hormones and Heredity
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