Search results
Results from the WOW.Com Content Network
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. The habit of some plants to move in the direction of the Sun, a form of tropism, was already known by the Ancient Greeks. They named one of those plants after that property Heliotropium, meaning "sun turn".
The sunflower was chosen as the symbol of the Spiritualist Church, for many reasons, but mostly because of the (false) belief that the flowers turn toward the sun as "Spiritualism turns toward the light of truth". Modern Spiritualists often have art or jewelry with sunflower designs. [83] The sunflower is often used as a symbol of green ideology.
Thus, if a sunflower, in turning towards the sun, becomes by that very act fully capable, without further condition, of reproducing a sunflower which turns in precisely corresponding ways toward the sun, and of doing so with the same reproductive power, the sunflower would become a Representamen of the sun.
The light from the lamp (1.) functions as a detectable change in the plant's environment. As a result, the plant exhibits a reaction of phototropism--directional growth (2.) toward the light stimulus. Auxin distribution controls phototropism. 1. Sunlight strikes the plant from directly above. Auxin (pink dots) encourages growth straight up. 2 ...
Template: The Sun. 33 languages ... Download as PDF; Printable version; In other projects ... Add to Sun worksheet and re-organize, making sure all articles match.
Plant perception is the ability of plants to sense and respond to the environment by adjusting their morphology and physiology. [1] Botanical research has revealed that plants are capable of reacting to a broad range of stimuli, including chemicals, gravity, light, moisture, infections, temperature, oxygen and carbon dioxide concentrations, parasite infestation, disease, physical disruption ...
Clytie turns into a sunflower as the Sun refuses to look at her, engraving by Abraham van Diepenbeeck. Clytie intended to win Helios back by taking away his new love, but her plan backfired on her, and her actions only hardened his heart against her. [14] Thereafter Helios avoided her altogether, never going back to her. [15]
In Self-Portrait with a Sunflower, van Dyck is sporting a classic "Vandyke"; his chin goatee consists of a tapered end, and his moustache tips are curled and pointed upward. [2] His upper lip is nearly hidden by the thick, dark hair of his moustache whilst remaining cleanly trimmed, indicative of the pride he has in the growth of his hair and ...