The scientific classification of Sunflower and Alternanthera 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. Sunflower and Alternanthera kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Sunflower and Alternanthera family is a major factor of Sunflower and Alternanthera 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. Sunflower belongs to the family Asteraceae and Alternanthera belongs to the family Amaranthaceae.
While comparing scientific classification, Sunflower and Alternanthera genus and other classification are also important. Also, when you compare Sunflower and Alternanthera, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Heilanthus and other plant's genus is Alternanthera. Sunflower tribe is Heliantheae and Alternanthera tribe is Not Available. Sunflower clade is Not Available and order is Asterales whereas Alternanthera clade is Angiosperms, Core eudicots and Eudicots and order is Caryophyllales. Every plant have subfamilies. Sunflower subfamilies are, Helianthodeae and Alternanthera subfamilies are Gomphrenoideae. In this way you can compare scientific classification of Sunflower and Alternanthera and other products also.