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Question

Which of the following have been matched correctly with respect to their mode of insect resistance?

A
Cotton – Hairy leaves
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B
Wheat – Solid stems
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C
Maize – Low sugar
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D
Wheat – Smooth leaves
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Solution

The correct options are
A Cotton – Hairy leaves
B Wheat – Solid stems
C Maize – Low sugar
Insect resistance in host crop plants may be due to morphological, biochemical or physiological characteristics. Hairy leaves in cotton provide resistance to jassids. Wheat also exhibits a similar mechanism. Solid stems in wheat provide resistance to stem sawfly. High aspartic acid, low nitrogen and low sugar content in maize resist stem borers.

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