ofcourse green onion is not a bulb. green onion is a smelly vegetable mostly used for hamburgers and salad :)
Scallions and green onions are the same plant. Chives are a completely different plant. Therefore neither.
Yes it is a vegetable.
No
its a bulb
A onion is a modified stem
Onion is a modified stem because it is a stem which grows underground
Onion is an underground modified stem.
The carrot, radish, onion and sugar beet have stems that are above ground and the roots and edible tuber/bulb is underground. The stem is green and the carrot is orange; the beet is red, the onion is white/red; the radish is red/white.
Onion roots emerge from the base of the condensed stem.
Onions are alliums and they are bulbs that grow underground.
An onion, strictly speaking, is a 'bulb' and is a stem.
Carrot, Sugarcane, Turnip & Onion all these are underground stem.
stem
white
The rounded stem of Onion is called Bulb. It is the modification of stem which becomes disc like and have plenty of fleshy scales.