Photosynthesis pigments, table

Plants need nitrogen to build proteins and a variety of other biomolecules, such as chlorophyll, the green pigment responsible for photosynthesis. As Table 15.1 shows, plants are able to absorb nitrogen from the soil in the form of ammonium ions, NH4+, and nitrate ions, N03 . Figure 15.4 shows the natural sources... 

The carotenoids that serve as accessory pigments for photosynthesis absorb strongly in the blue region (425-490 nm Table 4-1) and moderately in the green region (490-560 nm), usually having triple-banded spectra from 400 to 550 nm. For P-carotene in hexane, the three bands are centered at... 

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