Evaluate the defining features that distinguish a stem from a root.
a. The stem is the ascending part of the axis.
b. It develops from the plumule of the embryo.
c. The presence of nodes and internodes is a characteristic feature of the stem.
d. The stem is always green throughout its life.
e. The stem bears buds, which can be terminal or axillary.
f. The primary function of the stem is anchorage.
g. The stem is generally positively phototropic. (Inferred knowledge)
