Botanically speaking, roots are
phototropic and geotropic or, in other words, they naturally grow away from the light, vertically downwards.
What's more, edible landscaping doesn't require a move to the country or a
phototropic sleep pattern.
Sunflowers are easy to grow, though it's important to remember they are
phototropic plants that will twist around until they face the direction from which sunlight is strongest.
Terrariums receiving light predominately from one direction should be rotated to prevent
phototropic curving toward the light.
Cragg & Crisp (1991) analyzed the results obtained by other authors and suggested that pectinid settlement is positively geotactic and negatively
phototropic.
Yet if this were so, it would seem to require imputing the same grasp to
phototropic plants and barometers.
Bergey's Manual of Systematic Bacteriology, 2nd Edition, Volume 1: The Archaea and the Deeply Branching and
Phototropic Bacteria George Garrity, ed.
* The sunflower is
phototropic when the plant is in the bud stage, meaning that it tends to follow the movement of the sun from east in the morning to west in the afternoon.
Unique Characteristics: Gives characteristics that are unique to the material, such as fragrance, airdrying capabilities, distinctive form, geotropic or
phototropic properties, and toxicity.
Leaf
phototropic movements, such as those of young sunflower leaves which tend to maintain a position nearly perpendicular to the beam of the sun, further increase these difficulties, particularly where upper leaves or sparse canopies are involved.
Thus, the results imply that the
phototropic mechanisms underlying crown orientation are differentially responsive to direct and diffuse components of the radiation environment.
Like most biological organisms, humans are
phototropic: they grow toward the light.