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Engelmann used which green alga to describe the first action spectrum?
ACladophora (alga)
BSpirogyra (alga)
CChlamydomonas
DVolvox (colonial)
Answer & Solution
Correct answer: A. Cladophora (alga)
He split light with a prism and lit Cladophora in a suspension of aerobic bacteria that marked the sites of oxygen release.
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