Question

Splitting of water is associated with

• A. Photosystem I
• B. Lumpen of thylakoid
• C. Both photosystem I and II
• D. Inner surface of thylakoid membrane.

Answer 1

The correct option is D Inner surface of thylakoid membrane.

Light reaction occur inside the thylakoids, especially those of grana region. It involves two types of reaction photosynthesis of water and production of assimilation power. The phenomenon of breaking up of water into hydrogen and oxygen in the illuminated chloroplasts is called photolysis or photocatalytic , splitting of water, Water splitting complex is associated with the PSII, which itself is physically located on the inner surface of thylakoid membrane.
$4H_{2}O\rightleftharpoons 4H^{+}+4O{H}^{-}$
$4O{H}^{-}\underset{M{n}^{2+},C{a}^{2+},C{l}^{-}}{\overset{Oxygenevolvingcomplex}{\to }}2H_2+O_2\uparrow +4e^{-}$ , So, the correct answer is 'inner surface of thylakoid membrane.'.