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The names of some genes in Column X and their involvement in photosystem I (PSI) or photosystem II (PS II) is provided in Column Y. Column X Column Y A   […]

34 Light reactions of photosynthesis are carried out by four major protein complexes: Photosystem I (PSI), photosystem II (PSII), the cytochrome b6f complex and ATP synthase. The following are certain […]

33. Given below are a few statements regarding light reaction of photosynthesis A. Photo system II oxidizes water to 02 and in the process releases protons into lumen. B. Photosystem […]

During light reaction in photosynthesis, electron is transported in electron transport chain (ETC) and produces ATP and NADPH in the process. Following are certain statements regarding ETC during light reaction: […]

31. Which one of the following statements related to photosynthesis is NOT correct? (1) Light reaction takes place in the thylakoid membranes (2) ATP and NADPH are produced in thylakoid […]

30. A ‘Z’ scheme describes electron transport in 02– evolving photosynthetic organisms. The direction of electron flow is presented in the following sequences: A.P680*–àPheophytin–àQA–àQB–àPC–àCytochrome b6f–àP700 B. P700*–àPhylloquinone–àFeSA–àFeSB–àFeSX–àFd C. P680*–àPheophytin–àQA–àQB–àCytochrome b6f–àPC–àP700 […]

29. Which one of the following is the correct order of electron transport during light reaction in the thylakoid membrane of chloroplast? (1) P680–àCytochrome b6f —à PC–àPQ (2) P680–àPC–àCytochrome b6f–àPQ […]

28. In photosynthetic electron transport, electrons travel through carriers organized in the “Z-scheme”. The following are indicated as directions of electron flow: A. P680–àPQA–àPQB–àCytb6f–àPheo–àPC–àP700 B. P700–àA0–àA1–àFeSX–à FeSA–à FeSB–àFd C. P680–àPheo–àPQA–àPQB–àCytb6f–àPC–àP700 […]

In plants, the energy of sunlight is first absorbed by the pigments present in their leaf cells followed by the fixation of carbon through photosynthesis. Consider the following statements. (A) […]

26. After absorbing light, chlorophyll molecules in green plants exist in singlet and triplet states. Following are certain statement on singlet and triplet states of chlorophyll molecules: A. Singlet state […]