Question

Plz help with explanation

Answer 1

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Answer 2

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⭕ Cyclic photophosphorylation :

➡️ It is performed by photosystem l independently.

➡️ An external source of electrons is not required.

➡️ It is not concerned with photolysis of water. Therefore, no oxygen is evolved.

➡️ It synthesis ATP only.

➡️ It occurs mostly in stroma lamellae membrane.

⭕ Non - Cyclic photophosphorylation :

➡️ It is performed by collaboration of both photosystem l and ll.

➡️ The process requires an external electron donor.

➡️ It is connected with photolysis of water and liberation of oxygen occurs.

➡️ It is not only connected with ADP synthesis, but also with production of NADPH.

➡️ It occurs in the granal thylakoids.

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