A) red drop
B) photolysis
C) phosphorylation
D) carbon assimilation
Correct Answer: B
Solution :
Photolysis is the phenomenon of breaking up of water into hydrogen and oxygen in the illuminated chloroplasts. It is also called, photocatalytic splitting of water. It requires light energy, an oxygen evolving complex and an electron carrier. It also requires the ions,\[C{{a}^{2+}},C{{l}^{-}},M{{n}^{2+}}.\] Red drop refers to the sharp reduction in the rate of photosynthesis when monochromatic beam of more than 680 nm light was used alone by Emerson. Phosphorylation is the attaching of a phosphate group to a substrate. It can be photophosphorylation (occurs in thylakoids of chloroplasts) and oxidative phosphorylation (occurs in inner mitochondrial membrane, during respiration). Carbon assimilation (assimilation-to make similar) is the monopoly of green plants, chlorophyll being indispensable to the process. It is the process of formation of carbohydrates with the transformation of radiant energy into chemical energy. It is linked with Calvin cycle (\[{{\text{C}}_{\text{3}}}\]cycle) or reductive pentose phosphate cycle showing the path of carbon in photosynthesis.
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