Multiple choice Gene that renders plants immune to bollworm pests Cry 1 Ac Cry 2 Ac Cry 3 Ac Cry 4 Ac Cry 5 Ac Reveal answer Fill a bubble to check yourself A Correct answer Explanation Bt cotton plants are genetically modified with Cry1Ac gene from Bacillus thuringiensis, which produces a protein toxic to bollworm pests. This was a key component of India's GM cotton revolution.