The scientific classification of Pennywort and Mexican Marigold 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. Pennywort and Mexican Marigold kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Pennywort and Mexican Marigold family is a major factor of Pennywort and Mexican Marigold 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. Pennywort belongs to the family Apiaceae and Mexican Marigold belongs to the family Asteraceae.
While comparing scientific classification, Pennywort and Mexican Marigold genus and other classification are also important. Also, when you compare Pennywort and Mexican Marigold, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Hydrocotyle and other plant's genus is Tagetes. Pennywort tribe is Not Available and Mexican Marigold tribe is Tageteae. Pennywort clade is Angiosperms, Asterids and Eudicots and order is Apiales whereas Mexican Marigold clade is Angiosperms, Asterids and Eudicots and order is Asterales. Every plant have subfamilies. Pennywort subfamilies are, Not Available and Mexican Marigold subfamilies are Asteroideae. In this way you can compare scientific classification of Pennywort and Mexican Marigold and other products also.