The scientific classification of Pineapple and Pentas 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. Pineapple and Pentas kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Pineapple and Pentas family is a major factor of Pineapple and Pentas 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. Pineapple belongs to the family Bromeliaceae and Pentas belongs to the family Rubiaceae.
While comparing scientific classification, Pineapple and Pentas genus and other classification are also important. Also, when you compare Pineapple and Pentas, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Ananas and other plant's genus is Pentas. Pineapple tribe is Not Available and Pentas tribe is Knoxieae. Pineapple clade is Angiosperms, Commelinids and Monocots and order is Bromeliales whereas Pentas clade is Angiosperms, Asterids and Eudicots and order is Gentianales. Every plant have subfamilies. Pineapple subfamilies are, Bromelioideae and Pentas subfamilies are Rubioideae. In this way you can compare scientific classification of Pineapple and Pentas and other products also.