This grower is sure of this plant identification.
i have lots of tomato plants all about 20cm tall ready for potting up or planting out ,happy to swap for any other plant .
Lycopersicon genus (Tomato). There are 7 species in this genus, including L. esculentum (tomato). The leaves are generally pinnate and the flowers are generally 5-lobed yellow cymes. The fruit is a mucilagenous berry with many chambers ie: tomato-like.
They will require a long, warm growing season, You need to plant in fertile, well-drained soil.