The scientific classification of Petunia and Bradford Pear includes the entire classification chart that includes kingdom, family, clade, tribe etc. A kingdom is the second highest taxonomic rank. A taxonomic rank is the level that a living organisms are placed in hierarchical level of arrangement of life forms. All the living organisms are divided into kingdoms. Plant kingdom is a main classification of living organisms that include all plants. There are six kingdoms which are: Plantae, Animalia, Fungi, Protista, Aschaea/Archaeabacteria and Bacteria Eubacteria. Petunia and Bradford Pear kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Petunia and Bradford Pear family is a major factor of Petunia and Bradford Pear Scientific Classification. Plant family helps you narrow the search of your plants. It also gives you idea about, how the plant looks, how the seed will be like etc. These two plant families can be different or same. Petunia belongs to the family Solanaceae and Bradford Pear belongs to the family Rosaceae.
While comparing scientific classification, Petunia and Bradford Pear genus and other classification are also important. Also, when you compare Petunia and Bradford Pear, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Petunia and other plant's genus is Pyrus. Petunia tribe is Not Available and Bradford Pear tribe is Maleae. Petunia clade is Angiosperms, Asterids and Eudicots and order is Solanales whereas Bradford Pear clade is Angiosperms, Eudicots and Rosids and order is Rosales. Every plant have subfamilies. Petunia subfamilies are, Petunioideae and Bradford Pear subfamilies are Maloideae. In this way you can compare scientific classification of Petunia and Bradford Pear and other products also.