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Photosynthesis- Introduction

PS-II occurs ...

Question

PS-II occurs only in

A

stroma

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B

granal thylakoids

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C

stroma lamellae

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D

matrix

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Solution

The correct option is B granal thylakoids
The adjacent closed surface between the sacs of grana in thylakoids is known as an appressed region. Photosystem II is found in appressed of granal thylakoid.
PS I is located at the outer surface of the grana thylakoid membrane (non appressed granal regions and stroma lamella).
The region of thylakoid that faces the stroma is known as non-appressed region.

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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.

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. PS- II occurs only in the

Both grana and stroma

Q. Choose the statements that are true regarding chloroplast:
i. The only double membrane bound organelle present in the plant cells
ii. Contains stroma, grana and stromal lamella
iii. Sugar is synthesized in the stroma
iv. Membrane system traps the light energy

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