Cotton is protected from bollworm by using the bacterium . . . . . . .

Which of the following is not true for transgenic plants?

$A$ : $RNAi$ takes place in all eukaryotic organisms as a method of cellular defense.
$R$ : Complementary $dsRNA$ molecule binds to specific $mRNA$ and prevents its translation (silencing).

What triggers activation of protoxin to active $Bt$ toxin of Bacillus thuringiensis in bollworm?

The inactive form of $Bt$ toxin is converted to the active form in the insect gut $ . . . . . . $.

What is the function of a terminator gene?