The scientific classification of Guzmania and Oatgrass 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. Guzmania and Oatgrass kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Guzmania and Oatgrass family is a major factor of Guzmania and Oatgrass 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. Guzmania belongs to the family Bromeliaceae and Oatgrass belongs to the family Poaceae.
While comparing scientific classification, Guzmania and Oatgrass genus and other classification are also important. Also, when you compare Guzmania and Oatgrass, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Guzmania and other plant's genus is Danthonia. Guzmania tribe is Not Available and Oatgrass tribe is Aveneae. Guzmania clade is Commelinids and order is Poales whereas Oatgrass clade is Angiosperms, Commelinids and Monocots and order is Poales. Every plant have subfamilies. Guzmania subfamilies are, Tillandsioideae. and Oatgrass subfamilies are Danthonioideae. In this way you can compare scientific classification of Guzmania and Oatgrass and other products also.