Q.
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells) :
1. A particular hormone
2. An antifeedant
3. A toxic protein
4. Both sense and anti-sense RNA
NEET 2012
Ans: 4.
Both sense and anti-sense RNA
Nematode specific gene is introduced in host plant (tobacco), by using Ti plasmid (vector) of Agrobacterium tumefaciens. in such a manner that it produces both sense and antisense RNAin the host cells.
Topic: PEST RESISTANT PLANTS
