Read the following statement and select the correct ones.
(i) PS I is involved in non-cyclic photophosphorylation only.
(ii) PS II is involved in both cyclic and non-cyclic photophosphorylation.
(iii) Stroma lamellae membranes possess PS I only, whereas grana lamellae membranes possess both PS I and PS II.

(i) only

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(ii) only

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(iii) only

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(i), (ii) and (iii)

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Solution

The correct option is A (iii) only
PSI is involved in both cyclic and non - cyclic photophosphorylation. PS II is involved only in non - cyclic photophosphorylation. PS II is present in the appressed (inner) part of grana thylakoids. PS I is located in the non- appressed (outer) part of grana thylakoids as well as stroma thylakoids.

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Read the following four statements A, B, C and D, and select the right option having both correct statements.

Statements:

(A) Z scheme of light reaction occurs in the presence of PS I only.

(B) Only PS I is functional in cyclic photophosphorylation.

(D) Stroma lamellae lack PS II as well as NADP.

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