Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

In his experiment, T.W Engelmann (1843 – 1909) split light into its spectral components using a prism and then illuminated a green alga,Cladophora, placed in a suspension of aerobic bacteria. The bacteria were used to detect the sites of O₂evolution. He observed that the bacteria accumulated mainly in the region of blue and red light of the split spectrum. A first action spectrum of photosynthesis was thus described. It resembles roughly the absorption spectra of chlorophyll a and b.