Question 1 for biotechapplication-matching

Match the Bt toxin gene with the pest it controls.

Column I	Column II
(a) crylAc	(i) Corn borer
(b) cryllAb	(ii) Cotton bollworms
(c) crylAb	(iii) Cotton bollworms
(d) Bacillus thuringiensis	(iv) The source of the cry genes