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Using longer wavelengths means less light energy is needed for the same number of photons and therefore for the same amount of photosynthesis. For actual sunlight, where only 45% of the light is in the photosynthetically active wavelength range, the theoretical maximum efficiency of solar energy conversion is approximately 11%.
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 Greeks assumed it to be a passive effect, presumably the loss of fluid on the illuminated side, that did not need further study. [1]
The leaf is usually the primary site of photosynthesis in plants.. Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic.This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll.
This is a list of plants that have a culinary role as vegetables. "Vegetable" can be used in several senses, including culinary, botanical and legal. This list includes botanical fruits such as pumpkins, and does not include herbs, spices, cereals and most culinary fruits and culinary nuts. Edible fungi are not included in this list.
Brassica oleracea is a plant of the family Brassicaceae, also known as wild cabbage in its uncultivated form. The species evidently originated from feral populations of related plants in the Eastern Mediterranean, where it was most likely first cultivated.
Generally, fleshy fruits can be divided into two groups based on the presence or absence of a respiratory increase at the onset of ripening. This respiratory increase—which is preceded, or accompanied, by a rise in ethylene—is called a climacteric, and there are marked differences in the development of climacteric and non-climacteric fruits. [1]
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The generic name was first used by Pliny the Elder (23–79 CE) for a plant also known as strychnos, most likely S. nigrum. Its derivation is uncertain, possibly stemming from the Latin word sol , meaning "sun", referring to its status as a plant of the sun.