PS I and PS II occur over

Grana of chloroplast

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Matrix of mitochondria

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Stroma of chloroplast

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Inner membrane of mitochondrion

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Solution

The correct option is A Grana of chloroplast
The process that converts light energy into chemical energy takes place in a multi-protein complex called a photosystem. Two types of photosystems are embedded in the thylakoid membrane:- photosystem II ( PSII) and photosystem I (PSI). Each photosystem plays a key role in capturing the energy from sunlight by exciting electrons. These energized electrons are transported by “energy carrier” molecules, which power the light-independent reactions.

So, the correct option is 'Option A'.

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Similar questions

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.

Question 11
The correct sequence of flow of electrons in the light reaction is
(a) PS II, plastoquinone, cytochromes, PS I ferredoxin
(b) PS I, plastoquinone, cytochromes, PS II, ferredoxin
(c) PS I, ferredoxin, PS II
(d) PS I, plastoquinone, cytochromes, PS II, ferredoxin

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.

Q. Name the reaction centres of PS I and PS II.

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