Question

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

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

Answer 1

Answer: (A), (B), (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.