Question

Assertion (A) : Isolated single cells can be fused to produce somatic hybrids. Reason (R) : Cells selected for somatic hybridisation have desirable characters.

RNA interference (RNAi) helps in making tobacco-plant resistant to a nematode (Meloidegyne incognita) Choose the correct option that shows how RNAi is achieved :

(a) Mention any two advantages of micropropagation techniques. (b) Write in brief how the process is carried out in the laboratory. (c) Name any two important food plants grown commercially by this method.

Explain how the process of RNA interference technology is used effectively to prevent infestation of the roots of tobacco plant by the nematode Meloidegyne incognitia.