The phylogenetic system of classification is based on:
Evolutionary relationships
The correct option is A:
Explanation of the correct answer:
Explanation of the incorrect options:
Option B:
There is no taxonomic classification based on floral characters.
Option C:
Classification based on chemical constituents is called chemotaxonomy.
Option D:
Classification based on morphological features is called the Artificial system.
Final answer: The phylogenetic system of classification is based on evolutionary relationships.