Multiple Choice
The veins of leaves are ________.
I.composed of xylem and phloem
II.continuous, with vascular bundles in the stem and roots
III.finely branched to be in close contact with photosynthesizing cells
A) only I
B) only II
C) only III
D) I, II, and III
Correct Answer:

Verified
Correct Answer:
Verified
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