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  2. UV coloration in flowers - Wikipedia

    en.wikipedia.org/wiki/UV_coloration_in_flowers

    This allows plants that may require an animal pollinator to stand out from other flowers or distinguish where their flowers are in a muddied background of other plant parts. [5] For the plant, it is important to share and receive pollen so they can reproduce, maintain their ecological role, and guide the evolutionary history of the population.

  3. Anthocyanin - Wikipedia

    en.wikipedia.org/wiki/Anthocyanin

    In 1835, the German pharmacist Ludwig Clamor Marquart named a chemical compound that gives flowers a blue color, Anthokyan, in his treatise "Die Farben der Blüthen" (English: The Colors of Flowers). Food plants rich in anthocyanins include the blueberry, raspberry, black rice, and black soybean, among many others that are red, blue, purple, or ...

  4. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    Hydrangea macrophylla flowers can change color depending on soil acidity. In acid soils, chemical reactions occur in the soil that make aluminium available to these plants, turning the flowers blue. In alkaline soils, these reactions cannot occur and therefore aluminium is not taken up by the plant. As a result, the flowers remain pink.

  5. Hydrangea - Wikipedia

    en.wikipedia.org/wiki/Hydrangea

    Hydrangea flower color changes based on the pH in soil. As the graph depicts, soil with a pH of 5.5 or lower will produce blue flowers, a pH of 6.5 or higher will produce pink hydrangeas, and soil in between 5.5 and 6.5 will have purple hydrangeas. Hydrangea flower color can change based on the pH in soil.

  6. Floriculture - Wikipedia

    en.wikipedia.org/wiki/Floriculture

    Flowers and plants may be indoors in a sunny window, as part of the landscape in the front yard or on the patio or deck in the back yard. People have been studying flowers and plants and their interaction with humans and how to produce these flowers and plants so all humans can enjoy them. Floriculture scientists throughout the world to do this ...

  7. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    The National Water Quality Inventory Report to Congress is a general report on water quality, providing overall information about the number of miles of streams and rivers and their aggregate condition. [65] The CWA requires states to adopt standards for each of the possible designated uses that they assign to their waters.

  8. Color of water - Wikipedia

    en.wikipedia.org/wiki/Color_of_water

    The color of a water sample can be reported as: Apparent color is the color of a body of water being reflected from the surface of the water, and consists of color from both dissolved and suspended components. Apparent color may also be changed by variations in sky color or the reflection of nearby vegetation.

  9. Monochromatic garden - Wikipedia

    en.wikipedia.org/wiki/Monochromatic_garden

    A white garden is a feature garden composed of plants that produce white flowers and spathes as well as plants with a white or silvery cast to their foliage. The white garden is a variant of the color garden. The most essential feature of the white garden is its unity of color. 1912 painting by Henri Le Sidaner of a white garden at dusk