Which taxonomic category is characterized by an assemblage of families exhibiting a few similar characters?

Step-by-step solution

You have seen earlier that categories like species, genus and families are based on a number of similar characters. Generally, order and other higher taxonomic categories are identified based on the aggregates of characters. Order being a higher category, is the assemblage of families which exhibit a few similar characters. The similar characters are less in number as compared to different genera included in a family . Plant families like Convolvulaceae, Solanaceae are included in the order Polymoniales mainly base