Choose the correct option regarding the organism that infects the roots of tobacco plants.

Give a few examples of biofortified crops. What benefits do they offer to society?

Which vitamin content was increased in golden rice using biotechnology?

dsRNA is used to develop pest-resistant tobacco plants by a technique called:

$Bt$ cotton variety,which has been developed by the introduction of the $Bt$ toxin gene of $Bacillus$ $thuringiensis$,provides resistance against:

$A$: $Bt$ toxin are protein crystals containing insecticidal protein.
$R$: $B. \text{ thuringiensis}$ forms these protein crystals throughout continuously during their growth period.