Actually, there is no single scientific name for a plum tomato. A plum tomato, also known as a processing tomato or paste tomato, is any of a number of cultivars of oval or cylindrical tomatoes, both heirloom and hybrid. So plum tomatoes include the Roma tomato and the San Marzano tomato, among others.
The scientific name for tomato is Lycopersicon esculentum.
Go to http://en.wikipedia.org/, search for both potato, and search for tomato. The answer may surprise you. (It surprised me.)
Solanum lycopersicum
The scientific name of a tomato plant is solanum lycopersicum. It is related to nightshade and potatoes.
lycopersicum
Solanum lycopersicum
Solanum lycopersicum
Solanum lycopersicum
The scientific name for Governor's Plum is Flacourtia indica. It belongs to the family Salicaceae.
The common plum is called Prunus domestica.
bomboklaat
The scientific name for a tomato hornworm is Manduca quinquemaculata.
The scientific name would be Davidsonia pruriens.
The scientific name would be Spondias tuberosa.
The scientific name would be Carissa grandiflora.
The scientific name would be Chrysobalanus icaco.
The scientific name would be Coccoloba diversifolia.
The scientific name would be Harpephyllum caffrum.
Prunus triloba
Prunus domestica.