A) Barium-treated cotton seeds
B) Bigger thread variety of cotton with better tensile strength
C) produced by biotechnology using restriction enzymes and ligases
D) carrying an endotoxin gene from Bacillus thuringiensis
Correct Answer: D
Solution :
Bt-cotton, Bt-tobacco, Bt-tomato etc. are transgenic plants having Bt-2 gene encoding Bt toxin (e.g., thurioside). Bt-toxin gene has been isolated from a bacteria Bacillus thiiringiensis there for called Bt (i.e., Bacillus thuringiensis.) These plants are resistant for more than 140 species of insects including common cabbage worm, tent caterpillars. Bag worms. Canker worms, Gypsy worm etc.
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