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Photosynthesis in Higher Plants question

2003 · Q8
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Photosynthesis in Higher Plants question

2003 · Q8

NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1
Which one of the following concerns photophosphorylation?
  1. A
    ADP + AMP →Light energy\xrightarrow{Light\,energy}Lightenergy​ ATP
  2. B
    ADP + Inorganic PQ4 →Light energy\xrightarrow{Light\,energy}Lightenergy​ ATP
  3. C
    ADP + Inorganic PQ4 → \xrightarrow{\,}​ ATP
  4. D
    AMP + Inorganic PQ4 →Light energy\xrightarrow{Light\,energy}Lightenergy​ ATP
View written solutionFree

Correct answer: B

The light dependent production of ATP from ADP + Pi in the chloroplasts is called photophosphorylation. Photophosphorylation is of 2 types – Cyclic photophosphorylation – It involves only PS-I, water is not utilised and so no oxygen is evolved. Here two ATP molecules are produced.
Non-cyclic photophosphorylation – It involves both PS-I and PS-II, water is utilised and so oxygen is evolved. Here one ATP molecule and one NADPH2 molecule are produced.

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