The scientific classification of Rhubarb and Sweet Corn 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. Rhubarb and Sweet Corn kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Rhubarb and Sweet Corn family is a major factor of Rhubarb and Sweet Corn 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. Rhubarb belongs to the family Polygonaceae and Sweet Corn belongs to the family Poaceae.
While comparing scientific classification, Rhubarb and Sweet Corn genus and other classification are also important. Also, when you compare Rhubarb and Sweet Corn, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Rheum and other plant's genus is Zea. Rhubarb tribe is Not Available and Sweet Corn tribe is Andropogoneae. Rhubarb clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales whereas Sweet Corn clade is Angiosperms, Commelinids and Monocots and order is Cyperales. Every plant have subfamilies. Rhubarb subfamilies are, Not Available and Sweet Corn subfamilies are Not Available. In this way you can compare scientific classification of Rhubarb and Sweet Corn and other products also.