A) only ATP is formed \[NADP{{H}^{+}}+\text{ }{{H}^{+}}\]is not formed
B) photosystem-I stops getting excited at a wavelength of light beyond 680 nm
C) there is unidirectional cyclic movement of the electrons
D) there is no evolution of\[{{O}_{2}}\]
Correct Answer: A
Solution :
Assimilatory power i.e., ATP and \[NADP{{H}_{2}}\] are produced during light reaction of photosynthesis. As only cyclic photophosphorylation takes place only ATP is formed and photosynthesis cannot continue for long because in absence of \[NADP{{H}_{2}}\] dark reaction of photosynthesis do not take place.
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