Engelmann devised an experiment to learn which wavelength of light was most effective to carryout photosynthesis. He noted that largest groups of bacteria were found in the areas illuminated by red and blue light. This showed that
Excess CO2 is released in this area
There is increase in temperature in this area
More O2 is released in this area
Bacteria is more attracted to this area
Engelmann (1884-88) -
Showed that chloroplast was the seat of photosynthesis in cell and discovered the role of different wavelength of light on photosynthesis and plotted the action spectrum.
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