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PS I |
PS II |
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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. |
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2. Its photocentre is P700. |
2. Its photocentre is P680. |
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3. Has an absorption peak at wavelength of 700nm. |
3. Has an absorption peak at the wavelength of 680nm. |
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4. It receives electrons from photosystem II. |
4. Electrons are received from photolytic reaction. |
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5. Molecular oxygen is not evolved in this system. |
5. Molecular oxygen is evolved by break down of water. |
What is photosystem ? Which is the pigment that acts as reaction centre ? Describe the interaction of photosystem I and photosystem II.
