Question
What did Engelmann observe from his prism experiments?
Bacteria could not detect the sites of O2 evolution.
Bacteria release excess carbon dioxide in red and blue light
Bacteria accumulated due to the increase in temperature caused by increase in oxygen concentration
Bacteria get accumulated towards red and blue light
Solution
D.
Bacteria get accumulated towards red and blue light
Engelmann prism experiment showed effect of light on photosynthesis. He illuminated an alga Spirogyra with different colour of light using a prism. He found that blue and red light is most effective in the run on photosynthesis and bacterium (Rhodospirillum) accumulate on alga in red and blue light.
