(a) Name the insect that attacks cotton crops and causes lot of damage to the crop. How has Bt cotton plants overcome this problem and saved the crop ? Explain.

(b) Write the role of gene Cry IAb

 

 

Answers (1)
S safeer

a) That insect is bollworms.

Bt cotton means B. thurmgiensis cotton. It forms protein crystals during a particular phase of their growth as it contains toxic insecticidal proteins and when insect ingests the crop the toxin becomes active by reaching their gut due to the alkaline pH of the gut and the toxin cause swelling in the midgut epithelial cells of the insect and leads to death.

b) cry I AB controls the corn borer

 

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