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Light Reaction

PS- II occurs...

Question

PS- II occurs only in the

A

Stroma.

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B

Granal thylakoids.

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C

Stromal lamellae.

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D

Matrix.

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Solution

The correct option is B Granal thylakoids.
Photosystem- II mostly occurs in the appressed regions of granal thylakoids whereas photosystem- I and ATP synthase are mostly located in the stroma thylakoids and the outer layers of grana.

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Similar questions

Q. Pick out the various constituent(s) found within a chloroplast.

(i) Stroma
(ii) Ribosomes
(iii) Grana thylakoids
(iv) Stromal lamellae

Q. 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.

Q. Assertion :The stroma lamellae have both PS I and PS II. Reason: The grana lamellae lack PS II as well as NADP reductase enzyme.

Q. Assertion: The stromal thylakoids are rich in both PS I and PS II.
Reason: The granal membranes are rich in ATP synthetase.

Q. Assertion :The stromal thylakoids are rich in both PS I and PS II. Reason: The stroma membranes are rich in ATP synthase.

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