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Except for some parasitic plants, all land plants need sunlight to survive. [1] However, in general, more sunlight does not always make it easier for plants to survive. In direct sunlight, plants face desiccation and exposure to UV rays, and must expend energy producing pigments to block UV light, and waxy coatings to prevent water loss.
Aglaonema have been grown as luck-bringing ornamental plants in Asia for centuries. [3] They were introduced to the West in 1885, [3] when they were first brought to the Royal Botanic Gardens, Kew. [4] They have been cultivated, hybridized, and bred into a wide array of cultivars. They live in low-light conditions and are popular houseplants. [3]
Shade-tolerant species are species that are able to thrive in the shade, and in the presence of natural competition by other plants. Shade-intolerant species require full sunlight and little or no competition. Intermediate shade-tolerant trees fall somewhere in between the two.
Houseplants which survive in conditions similar to a homeowner's living space will have a higher probability of survival. Tropical houseplants which grow under high thresholds of heat, for instance, will grow sun leaves which contain fewer chloroplasts. Plants which grow in the shade will grow shade leaves, containing more chloroplasts.
28.2% (sunlight energy collected by chlorophyll) → 68% is lost in conversion of ATP and NADPH to d-glucose, leaving; 9% (collected as sugar) → 35–40% of sugar is recycled/consumed by the leaf in dark and photo-respiration, leaving; 5.4% net leaf efficiency. Many plants lose much of the remaining energy on growing roots.
Blomdahl is currently at the start of the annual “polar night,” a nearly three-month period during which her little corner of the globe receives almost no sunlight due to the tilt of the Earth.
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