Biology · The Living World

The plant families Convolvulaceae and Solanaceae are grouped together under the Order Polymoniales. This taxonomic grouping is primarily based on which set of characters?

1. A
   Vegetative characters like root branching and leaf venation only.
2. B
   Floral characters and reproductive features.
3. C
   Ecological habitat and geographical distribution parameters.
4. D
   Anatomical features of the secondary xylem and phloem.