Differentiate between photosystem I and II.

Solution

PS I	PS II
1. The system is located in both the non-appressed part of grana thylakoids as well as stroma thylakoids.	1. Photosystem II is present in the appressed part of grana thylakoids.
2. Its photocentre is P₇₀₀.	2. Its photocentre is P₆₈₀.
3. Has an absorption peak at wavelength of 700nm.	3. Has an absorption peak at the wavelength of 680nm.
4. It receives electrons from photosystem II.	4. Electrons are received from photolytic reaction.
5. Molecular oxygen is not evolved in this system.	5. Molecular oxygen is evolved by break down of water.

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