Plant Growth And Development Question 199
Question: DCMU is a herbicide which kills the plant by [BHU 1980, 82, 89]
Options:
A) Checking respiration
B) Destroying chloroplast
C) Inhibiting carbon dioxide fixation as it is strong inhibitor of pigment system-II
D) Inhibiting photolysis of water as it is a strong inhibitor of pigment system-I
Show Answer
Answer:
Correct Answer: C
Solution:
DCMU (Dichlorophenyl dimethyl urea): This herbiside breaks the carrier chain between PS-I and PS-II and also break to non-cyclic phosphorylation so that light reaction is blocked.
BETA
