$A$ tumour-inducing plasmid widely used in the production of transgenic plants is that of:

Select the appropriate option for $RNAi$.

$Meloidegyne incognitia$ infects the root of tobacco and decreases its yield.

Main objective of production/use of herbicide resistant $GM$ crops is to
$(A)$ -Reduce herbicide accumulation in food articles for health safety.
$(B)$ -Eliminate weeds in the field without the use of herbicides.
$(C)$ -Eliminate weeds from the field without the use of manual labour.
$(D)$ -Soil pollution and biomagnification caused by herbicides.
Which of the following statements are correct?

$A$ novel strategy was adopted to prevent $Meloidogyne$ $incognitia$ infection in tobacco plants that was based on the process of:

In $Bt$ cotton,what does $Bt$ stand for?