Question

Cultivation of Bt cotton has been much in the news. The prefix Bt means ______.

Options

• barium-treated cotton seeds

• bigger thread variety of cotton

• produced by biotechnology

• carrying an endotoxin gene from Bacillus thuringiensis

Answer 1

Cultivation of Bt cotton has been much in the news. The prefix Bt means carrying an endotoxin gene from Bacillus thuringiensis.

Explanation:

Bt cotton carries a gene for an insecticidal protein from the bacterium Bacillus thuringiensis, which protects it from bollworms. The prefix Bt does not refer to barium, thread size or biotechnology as a process.