Ok, to start with, there is no part of the plant that is called a vegetable.
The term is a purely culinary term. Plant food is a fruit, a flower, a root, a herb, a nut,
or part of the stem or stalk.
To call potato a vegetable when it is a root shows an ignorance
that even the subjects of this article would be proud of.
Thanongsak Chaisena 017 3EN