Heliotropism, a form of tropism, is the diurnal or seasonal motion of plant parts (flowers or leaves) in response to the direction of the Sun. == History == The habit of some plants to move in the direction of the Sun, a form of tropism, was already known by the Ancient Greeks.
Heliotropism, a form of tropism, is the diurnal or seasonal motion of plant parts (flowers or leaves) in response to the direction of the Sun. == History == The habit of some plants to move in the direction of the Sun, a form of tropism, was already known by the Ancient Greeks.
Source: Wikipedia "Heliotropism" · CC BY-SA 4.0
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