Of course!
potato
root
The root of the carrot is what is eaten.
so far as I know, no, I havent seen it stated as edible
The root it is a root vegetable
No, cabbage is not classified as a root vegetable. The edible part grows above the ground. Although cabbage has roots, they are not the edible part. Such things as carrot and potato (where the edible parts grow under the ground) are classified as "root" vegetables.
edible
taro?
no -.-
fibrous root
Stem tuber of the potato plant is edible
Yes. The part of the carrot plant most people refer to as a "carrot" is actually the root, which is edible. The top of the carrot, referred to as carrot greens, are also edible.