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Question : Read of the following statements:- (a) Insect resistance in crop plants may be due to morphological, biochemical or playsiological characteristics. (b) Hairy leaves in cotton are resistant to cereals jassids. (c) Smooth leaves and nectar-less cotton varieties do not attract bollworms. (d) In maize, high asparatic acids, low nitrogen and sugar leads to resistance to stemborers. Choose correct statements :-

Answer»

a,C
a,B,c
a,c,d
a,b,c,d

Answer :D


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