Which part of the tobacco plant is infected by $Meloidogyne \ incognita$?

Genetic modification has:
$I$. reduced reliance on chemical pesticides
$II$. reduced post-harvest losses
$III$. increased efficiency of minerals used by the plants
$IV$. enhanced nutritional value of the food
Which of the statements given above are correct?

Blindness can be prevented by the use of which crop in poor countries?

Transgenic plants are mainly developed to be resistant to which of the following?

What are the various advantages of using genetically modified plants to increase the overall yield of the crop?

Silencing of specific $\text{mRNA}$ is possible via $\text{RNA}$ interference because of $-$