Question 10
Splitting of water is associated with
(a) photosystem I
(b) lumen to thylakoid
(c) both photosystem I and II
(d) inner surface of thylakoid membrane

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Solution

(d) The thylakoid is a photosynthetic unit in the chloroplast. It is a membrane bound structure. The membrane has photosystems I and II embedded in it, in the form of chemicals and molecules. Splitting of water is associated with PS-II, which occurs in presence of $M n^{2 +} a n d C l^{-}$ ions on the inner surface of thylakoid membrane.
$2 H_{2} O M n^{+} - -- \to C l^{-} 4 H^{+} O_{2} + 4 e^{-}$
Photosystem I and II are associated with light reactions.

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Similar questions

Q. Read the following statements with respect to chemiosmosis:
(a) Splitting of water molecules takes place on the inner side of the thylakoid membrane.
(b) NADP reductase enzyme is located on the stromal side of thylakoid membrane.
(c) Energy is used to pump protons from stroma to lumen.
(d) During photophosphorylation, the pH decrease in the lumen of thylakoid.
Which of the above statement(s) is/are correct?

Q. Assertion :Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids. Reason: Photolysis of water takes place in inner membrane of thylakoid.

Which pathway utilizes both Photosystem I and Photosystem II?

Assertion: Protons or hydrogen ions produced by photolysis of water accumulate in the lumen of thylakoids.
Reason: Photolysis of water takes place in the inner membrane of thylakoids.

Q. Assertion :

Protons produced by photolysis accumulate in lumen of thylakoids.

Reason: Photolysis occurs in inner membrane of thylakoids.

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Question 10 Splitting of water is associated with (a) photosystem I (b) lumen to thylakoid (c) both photosystem I and II (d) inner surface of thylakoid membrane

Question 10
Splitting of water is associated with
(a) photosystem I
(b) lumen to thylakoid
(c) both photosystem I and II
(d) inner surface of thylakoid membrane