Question

Which one occurs both during cyclic and
noncyclic modes of photophosphorylation?
(a) Involvement of both PS I and PS II
(b) Formation of ATP
(c) Release of O₂
(d) Formation of NADPH

Answer 1

Answer:

b

Explanation:

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Answer 2

During the cyclic and  noncyclic modes of photophosphorylation, the formation of ATP takes place.

• The non-cyclic photo-phosphorylation involves PS-I as well as PS-II, while the cyclic photophosphorylation involves PS-1 only.  
• Oxygen is released by the splitting of water through the process of photolysis during the non-cyclic photophosphorylation.
• NADPH is formed by NADP and H+ during the non-cyclic photophosphorylation.  
• Due to the concentration gradient across the thylakoid membranes ATP is formed during the cyclic and the non-cyclic photophosphorylation.