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Solution


Q.

Dichlorophenyl dimethylurea inhibits
 a) PS-I                                      b) PS-II
 c) Chloroplast functioning        d) Oxidative phosphorylation
1 A
2 B
3 C
4 D

Ans.

(b) DCMU (Dichlorophenyl dimethylurea) is a herbicide, which inhibits oxygen evolution and non-cyclic photophosphorylation. Oxygen evolution and non-cyclic photophosphorylation, both are involved in PS-II