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  2. Action spectrum - Wikipedia

    en.wikipedia.org/wiki/Action_spectrum

    An action spectrum is a graph of the rate of biological effectiveness plotted against wavelength of light. [1] It is related to absorption spectrum in many systems. Mathematically, it describes the inverse quantity of light required to evoke a constant response.

  3. Photochemical action plots - Wikipedia

    en.wikipedia.org/wiki/Photochemical_action_plots

    Photochemical action plots are a scientific tool used to understand the effects of different wavelengths of light on photochemical reactions.The methodology involves exposing a reaction solution to the same number of photons at varying monochromatic wavelengths, monitoring the conversion or reaction yield of starting materials and/or reaction products.

  4. Phototropism - Wikipedia

    en.wikipedia.org/wiki/Phototropism

    Phototropism in Solanum lycopersicum. In biology, phototropism is the growth of an organism in response to a light stimulus. Phototropism is most often observed in plants, but can also occur in other organisms such as fungi. The cells on the plant that are farthest from the light contain a hormone called auxin that reacts when phototropism ...

  5. Phototropin - Wikipedia

    en.wikipedia.org/wiki/Phototropin

    One study found that phototropins on the plasma membrane play a role in phototropism, leaf flattening, stomatal opening, and chloroplast movements, while phototropins on the chloroplasts only partially affected stomatal opening and chloroplast movement, [16] suggesting that the location of the protein in the cell may also play a role in its ...

  6. Plant perception (physiology) - Wikipedia

    en.wikipedia.org/wiki/Plant_perception_(physiology)

    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 ...

  7. Phytochrome - Wikipedia

    en.wikipedia.org/wiki/Phytochrome

    It has been well documented that gravitropism is the main tropism in roots. However, a recent study has shown that phototropism also plays a role. A red light induced positive phototropism has been recently recorded in an experiment that used Arabidopsis to test where in the plant had the most effect on a positive phototropic response.

  8. Photomorphogenesis - Wikipedia

    en.wikipedia.org/wiki/Photomorphogenesis

    In developmental biology, photomorphogenesis is light-mediated development, where plant growth patterns respond to the light spectrum.This is a completely separate process from photosynthesis where light is used as a source of energy.

  9. File:Phototropism Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Phototropism_Diagram.svg

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