Q. The active component of photosystem-I composed of :
(a) chlorophyll-a with absorption peak at 680 nm
(b) chlorophyll-a with absorption peak at 700 nm
(c) chlorophyll-h with absorption peak at 680 nm
(d) chlorophyll-a and b with absorption peak at 700 nm
Solution :
Correct option : B The reaction center of photosystem-I is composed of two chlorophyll molecules and is therefore referred to as a dimer. The dimer is composed of one chlorophyll a molecule and one chlorophyll a’ molecule with absorption peak at 700 nm. Thus, the correct answer is ‘chlorophyll a with absorption peak at 700 nm.’
