The scientific classification of Aster and Japanese Crab Apple 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. Aster and Japanese Crab Apple kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Aster and Japanese Crab Apple family is a major factor of Aster and Japanese Crab Apple 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. Aster belongs to the family Asteraceae and Japanese Crab Apple belongs to the family Rosaceae.
While comparing scientific classification, Aster and Japanese Crab Apple genus and other classification are also important. Also, when you compare Aster and Japanese Crab Apple, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Aster and other plant's genus is Malus. Aster tribe is Astereae and Japanese Crab Apple tribe is Maleae. Aster clade is Angiosperms, Asterids and Eudicots and order is Asterales whereas Japanese Crab Apple clade is Angiosperms, Eudicots and Rosids and order is Rosales. Every plant have subfamilies. Aster subfamilies are, Asteroideae and Japanese Crab Apple subfamilies are Amygdaloideae. In this way you can compare scientific classification of Aster and Japanese Crab Apple and other products also.