The action spectrum of photosynthesis relates to the relative ..
(determining the action spectrum of photosynthesis):
Two techniques for measuring absorption have been used, . theseparate determination of the diffuse reflectance and the diffuse transmittancewith the leaf at a port of an integrating sphere and the direct determination ofthe non-absorbed fraction with the leaf in the sphere. In a cross-check bothmethods yielded the same results for the absorption spectrum.
Chlorophyll and the action spectrum of photosynthesis ..
Determination of efficient (photosynthetically speaking) light sources is important for several reasons. Economy in the costs of maintaining a coral reef aquarium certainly is a concern, but the health of zooxanthellae and hence their animal host should be of primary importance. Aesthetic concerns, such as the promotion of coral coloration through expression of fluorescent proteins and non-fluorescent chromoproteins, are of interest to many.
laboratory determination of action spectra is …
Action Spectrum: The rate of physiological activity (such as oxygen production resulting from photosynthesis) plotted against wavelength of light. See Figure X for an action spectrum of zooxanthellae from a stony coral.
Action spectrum of photosynthesis determined …
The absorption spectrum of a leaf is often thought to contain some clues tothe photosynthetic action spectrum of chlorophyll. Of course, absorption ofphotons is needed for photosynthesis, but the reverse, photosynthesis when thereis absorption, is not necessarily true. As a check on the existence ofabsorption limits we measured spectra for a few different leaves.