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The leaves of the Tobacco plant (Nicotiana tabacum) are used to produce tobacco.
Nicotiana tabacum
It is Tree Tobacco (Nicotiana Glauca)
Nicotiana is the genus name for the plant Nicotiana, it belongs to the family Solonaceae
The scientific or taxonomic name would be Nicotiana tabacum.
There are currently 60 species of tobacco. There are two major species and they are Nicotiana tobacum and Nicotiana rustica.
The scientific or taxonomic name would be Nicotiana glauca.
Nicotiana tabacum
tobacco
You mean what is nicotine found in? It occurs naturally in the tobacco plant as one of nature's pesticides (similarly to caffeine in tea and coffee, it is poisonous to insects). http://en.wikipedia.org/wiki/Nicotiana
the informal name of tobacco is called 'bacci'
Nicotiana are generally reproduced from seed. Some hybridized varieties may not grow true from collected seed (that is, the resultant plant may not exhibit traits from the parent, but from an earlier ancestor).