What is photosystems? Which is the pigment that act as reaction center ?

What is phtosystem? Which is the pigment that acts as a reaction centre? Describe the interaction of photosystem I and Photosystem II.

What is a photosystem? Which is the pigment that acts as a reaction centre? Describe the interaction of photosystem I and photosystem II,

What are photosystems?

What is a pigment?

What is a pigment?

In pigment system -I, reaction centre is :

In pigment system II, reaction centre is

Which molecule acts as a reaction centre?

With reference to photosystem, bring out the meaning of the term reaction centre.