The scientific classification of Grapefruit and Black Wattle 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. Grapefruit and Black Wattle kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Grapefruit and Black Wattle family is a major factor of Grapefruit and Black Wattle 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. Grapefruit belongs to the family Rutaceae and Black Wattle belongs to the family Fabaceae.
While comparing scientific classification, Grapefruit and Black Wattle genus and other classification are also important. Also, when you compare Grapefruit and Black Wattle, 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 Peltophorum. Grapefruit tribe is Not Available and Black Wattle tribe is Caesalpinieae. Grapefruit clade is Dicotyledonous and order is Sapindales whereas Black Wattle clade is Angiosperms, Eudicots and Rosids and order is Gentianales. Every plant have subfamilies. Grapefruit subfamilies are, Rosoideae and Black Wattle subfamilies are Caesalpinioideae. In this way you can compare scientific classification of Grapefruit and Black Wattle and other products also.