(1) to reduce post harvest losses
(2) to develop a plant tolerant to abiotic stresses
(3) to develop a pest resistant plant against infestation by nematode
(4) to enhance the mineral usage by the plant
Answer (3) to develop a pest resistant plant against infestation by nematode
Sol. Option (3) is the correct answer. Transgenic tobacco plants using RNAi exhibit resistance to nematode Meloidogyne incognita. Many GM crops show reduced post harvest losses and exhibit resistance to abiotic stresses but that is not the aim of RNAi.