How Would You Determine Whether an Unknown Plant Stem Had

How would you determine whether an unknown plant stem had microphylls or small megaphylls?

A) Examine the vascular system. If there is only one strand of vascular tissue, they are most likely microphylls.
B) Measure the length of the leaflike structures. If they are a centimeter or less in length, they are microphylls.
C) Examine the branching pattern. If it is dichotomous, they are most likely megaphylls.
D) Look for sporangia. If they are present, the leaflike structures are most likely microphylls.
E) Look for roots. If they are absent, the structures are most likely megaphylls.

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