I believe it'd be A because the virus infects cells whereas the Giardia Lambia only releases toxins.
Correct answer: A). Trees would grow faster
The insect resistant plants are genetically modified in such a way that they contain some toxic substance for the insects. when the insect tries to infect such plant the toxic substance is released from the plants and it will kill the insect and the plant stay away from healthy and give high productivity to farmers.
Example: Bt crops
Hence, the correct answer would be option A.
Explanation:
i think b. is the warmer the weather, the quicker the Silkworm will complete its life-cycle,