I'm an amateur and also I'm not sure why you're asking, but:
It's the part near the center of the tomato that the seeds seem to come out of. The tomato placenta is where the seeds get their nutrients from. When you slice a tomato, there's that "chamber" full of slime and seeds, and the inner curved portion of the chamber is the placenta.
It tastes just like the other parts of a tomato.
Does that answer your question?
In tomato, the ovules are produced on the central axis of a multilocular ovary. Thus, It has an Axile placentation.
Placentation is the arrangement of placentae and ovules in the ovary. There are different types of placentation: 1)marginal placentation 2)parietal placentation 3)axile placentation 4)free central placentation 5)basal placentation 6)superficial placentation
Marginal placentation
PARIETAL PLACENTATION, i.e, the seedsin the fruit (cucumber) are attached to the inner surface of the ovary.
Epitheliochorial placentation.
axile placentation
basal placentation
Zonal placentation.
The type of placentation is parietal.
Parietal
tomato contains ascorbic acid
parietal
I dont think so