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Hairy leaves – Cereal leaf bollworms wheat

Hairy leaves – Resistance to jassids in cotton

Solid stem of wheat –Resistance to bollworms

Low aspartic acid in maize – Resistance to stem borers

answer is B.

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Detailed Solution

A major cause for large scale destruction of crop plant and their produce is insect, pest infestation. Host crop plants may show resistance due to morphological, biochemical or physiological characteristics.

Hairy leaves in several plants are associated with resistance to insect pests, e.g, resistance to jassids in cotton and cereal leaf beetle in wheat.

In wheat, solid stems lead to non-preference by the stem sawfly and smooth leaved and nectar-less cotton varieties do not attract bollworms.

High aspartic acid, low nitrogen and sugar content in maize leads to resistance to maize stem borers.

Hairy leaves in several plants are associated with resistance to insect pests, e.g, resistance to jassids in cotton and cereal leaf beetle in wheat.

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