Question

First transgenic plant released for commercial use was
(a) Bt-Cotton
(b) Tobacco
(c) Golden rice
(d) Solan gola

Answer 1

Hint: The plant is immune to antibiotics and is the first genetically modified crop. Some plant parasites affected the roots of this particular plant that impacted yield and production costs. Therefore the transgenic plant was produced to prevent this. This plant belongs to the genus Nicotiana and the family Solanaceae.

Complete step by step answer:
A nematode had an impact on tobacco plant roots. Strategies adopted to avoid this infection which was focused on the RNA interference mechanism.
RNA interference is the phenomenon that inhibits a gene's function in the sense of development and the antisense RNA. The approach includes RNA silencing. The outcome was that a transgenic host expressing unique interfering RNA could not live in the parasite. Thus the transgenic plant is safe against the parasite.
Tobacco is the common name of a variety of plants belonging to the genus Nicotiana and the family Solanaceae and the general term for any product made from the cured leaves of a tobacco plant. Tobacco contains nicotine, as well as harmala alkaloids that are highly addictive stimulant alkaloids.
Tobacco is grown annually, and it can be harvested in a variety of ways. The whole plant is harvested at once by cutting off the stalk on the ground with a tobacco knife in the oldest process still used today; it is then speared on sticks, four to six plants per stick, and hanging in a curing barn.
So, the correct answer is, '(b) Tobacco'

Additional information: Bt cotton (India's first genetically modified crop) was formally approved for commercial cultivation in India on 26th March 2002. Bt cotton is genetically modified with the Bacillus thuringiensis (Bt) gene producing a toxic protein to bollworm pest.
Golden rice is a transgenic rice variety (Oryza Sativa), producing large concentrations of β-carotene. β-carotene is the principal vitamin A source. Golden rice produces 23 times more provitamin A, the lack of which results in night blindness.
Solan gola is a variety developed from tomatoes.

Note: Transgenic plants are plants into which, through genetic engineering methods, one or more genes from another species is incorporated into the genome. Techniques include the biolistic method of shooting a heavy metal coated with plasmid DNA into cells and the transformation facilitated by Agrobacterium tumefaciens.