Why does each element have a unique spectrum?
There are many possible electron transitions for each atom, and each transition has a specific energy difference. This collection of different transitions, leading to different radiated wavelengths, make up an emission spectrum. Each element’s emission spectrum is unique.
What is the difference between action spectrum and absorption spectrum?
An absorption spectrum defines the spectrum of electromagnetic radiation, or light, plants absorb. An action spectrum defines the spectrum of electromagnetic radiation most effective for photosynthesis. In other words, it is the part of the light spectrum that does the work.
Why are the absorption spectrum of Chl a and the action spectrum of photosynthesis is identical?
The similarity of the action spectrum of photosynthesis and the absorption spectrum of chlorophyll tells us that chlorophylls are the most important pigments in the process. The spectra are not identical, though, because carotenoids, which absorb strongly in the blue, play a role as well.
What is action spectrum of photosynthesis 11?
Action spectrum is a curve which shows relative rates of photosynthesis at The graph of the action spectrum indicates that the maximum photosynthesis takes place in the blue and red parts of visible light.
What is the absorption spectrum in photosynthesis?
Pigments absorb light as a source of energy for photosynthesis. The absorption spectrum indicates the wavelengths of light absorbed by each pigment (e.g. chlorophyll) The action spectrum indicates the overall rate of photosynthesis at each wavelength of light.
Which light spectrum is suitable for photosynthesis?
The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.
Which spectrum of light is absorbed in photosynthesis strongly?
The areas of the spectrum that drive photosynthesis are highest in the red end (600-700 nm), followed by the blue region (400-500 nm) and lastly, the green region (500-600 nm). These data show that between 50 and 75% of the green light is used in photosynthesis. Thus, Green light is necessary for photosynthesis.
What part of the light spectrum do plants use?
The light that plants predominately use for photosynthesis ranges from 400–700 nm. This range is referred to as Photosynthetically Active Radiation (PAR) and includes red, blue and green wavebands. Photomorphogenesis occurs in a wider range from approximately 260–780 nm and includes UV and far-red radiation.