Question
Herbicide that blocks electrons transport from PS-II to PS-I by inhibiting electron flow between plastoquinone → Cytochrome is
DCMU
Paraquat
DCPIP
None of these
Solution
A.
DCMU
DCMU is a selective herbicide that acts as a potent inhibitor of PS-II. Paraquat inhibits PS-I by producing superoxides.
DCPIP is a dye used to measure the rate of photosynthesis.
