The scientific classification of Watermelon and California Buckeye 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. Watermelon and California Buckeye kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Watermelon and California Buckeye family is a major factor of Watermelon and California Buckeye 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. Watermelon belongs to the family Cucurbitaceae and California Buckeye belongs to the family Sapindaceae.
While comparing scientific classification, Watermelon and California Buckeye genus and other classification are also important. Also, when you compare Watermelon and California Buckeye, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Citrullus and other plant's genus is Aesculus. Watermelon tribe is Not Available and California Buckeye tribe is Not Available. Watermelon clade is Angiosperms, Eudicots and Rosids and order is Cucurbitales whereas California Buckeye clade is Angiosperms, Eudicots and Rosids and order is Sapindales. Every plant have subfamilies. Watermelon subfamilies are, Not Available and California Buckeye subfamilies are Hippocastanoideae. In this way you can compare scientific classification of Watermelon and California Buckeye and other products also.