(a)

Write the scientific name of the nematode that infests the tobacco plants and the part that it infests.

(b)

How is Agrobacterium used to protect tobacco plant from this attack ?

By using Agrobacterium vector, Nematode specific genes were introduced into host plant, introduction of DNA produced both sense and anti-sense RNA in the host cells this two RNAs being complementary to each other form a double stranded RNA (ds RNA), that initiated RNAi and thus silenced the specific mRNA of the nematode hence parasite could not survive in transgenic host.