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Photosynthesis in Higher Plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPhotosynthesis in Higher Plants5 Marks
Question
Give comparison between the following:
Cyclic and non-cyclic photophosphorylation
✓

Answer

Cyclic and non-cyclic photophosphorylation:
  Cyclic photophosphorylation   Non-cyclic photophosphorylation
i. It involves the participation of only PS I. i.
It involves the participation of both PS I and PS II.
ii.
This system is not concerned with photo-oxidation of water.
 
ii.
The first step of this system is photo-oxidation of water resulting into H+, e- and release of O2.
iii.
 
It is only concerned with the production of ATP.
 
iii.
 
It is concerned with the reduction of NADP+ and production of ATP.
 
iv.
It occurs under special conditions when NADPH starts accumulating. 
iv.
It occurs under normal conditions.

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