Q. Some of the characteristics of Bt cotton are
A) High yield and resistance to bollworms
B) Long fibre and resistance to aphids
C) Medium yield, long fibre and resistance to beetle pests
D) High yield and production of toxic protein crystals which kill dipteran pests
Explanation
[Solution from source] Bt cotton expresses the cryIAc and cryIIAb genes, whose toxins control cotton bollworms (lepidopteran larvae), cutting pest losses and raising yield. The cry genes in Bt cotton act on bollworms, not on dipterans such as flies and mosquitoes, aphids or beetles. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.