Light reaction or photochemical phase includes
I. light absorption
II. water splitting
III. oxygen release
IV. ATP and NADPH formation
Choose the correct option.

I, II and IV

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I, II and III

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I, III and IV

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I, II, III and IV

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Solution

The correct option is D I, II, III and IV
Light reaction or photochemical phase is called as photophosphorylation or Hill's reaction. It includes non-cyclic phosphorylation and cyclic phosphorylation. During this reaction, the light is absorbed by the chlorophyll and water splits into H $_{2}$ and 1/2O $_{2}$ . Oxygen is released as the byproduct of the reaction along with formation of carbohydrate. Along with oxygen, ATP and NADPH are also formed.
Thus, the correct answer is 'I, II, III and IV.'

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Light reaction or photochemical phase includesI. light absorptionII. water splittingIII. oxygen releaseIV. ATP and NADPH formationChoose the correct option.

Light reaction or photochemical phase includes
I. light absorption
II. water splitting
III. oxygen release
IV. ATP and NADPH formation
Choose the correct option.