The scientific classification of Citron and Quince 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. Citron and Quince kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Citron and Quince family is a major factor of Citron and Quince 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. Citron belongs to the family Rutaceae and Quince belongs to the family Rosaceae.
While comparing scientific classification, Citron and Quince genus and other classification are also important. Also, when you compare Citron and Quince, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Citrus and other plant's genus is Cydonia. Citron tribe is Citreae and Quince tribe is Maleae. Citron clade is Angiosperms, Eudicots and Rosids and order is Sapindales whereas Quince clade is Angiosperms, Eudicots and Rosids and order is Rosales. Every plant have subfamilies. Citron subfamilies are, Aurantioideae and Quince subfamilies are Amygdaloideae. In this way you can compare scientific classification of Citron and Quince and other products also.