Which statements correctly summarize the key anatomical differences that underpin the classification of angiosperms into monocots and dicots?
a. The number of xylem bundles in the root (polyarch in monocots vs. few in dicots).
b. The arrangement of vascular bundles in the stem (scattered in monocots vs. ring in dicots).
c. The presence (dicots) or absence (monocots) of cambium, leading to the potential for secondary growth.
d. The differentiation of mesophyll in the leaf (differentiated in dicots vs. undifferentiated in monocots).
e. The shape of guard cells (dumb-bell shaped in grasses, a major monocot group).
f. The presence of two cotyledons in dicots versus one in monocots (an embryological, not anatomical, feature of the mature plant).
g. The type of venation in leaves (reticulate in dicots vs. parallel in monocots) which reflects the vascular arrangement.
