Question

Tobacco plants resistant to a nematode have been developed by the introduction of DNA that is produced (In the host cells).

• A. both sense and antisense RNA
• B. a toxic protein
• C. an antifeedant
• D. a particular hormone

Answer 1

The correct option is A

both sense and antisense RNA

The correct option is A.

Explanation of the correct option:

1. Nematode-specific genes were introduced into the tobacco plant using an Agrobacterium vector.
2. This introduced DNA is responsible for the production of both sense and antisense RNA.
3. Being complementary to one another these RNAs formed dsRNA.

Explanation of the incorrect options:

Option B:

Toxic protein is not synthesized by the newly introduced DNA into the tobacco plants.

Option C:

Antifeedants are naturally present in the plants and are used to kill the insects or pests that attack plants.

Option D:

Hormones are produced by the plant cells for their growth and development processes.

Final answer: Tobacco plant resistance to a nematode has been developed by the introduction of DNA that produces both sense and antisense RNA.