The scientific classification of Royal Fern and Apple Tree 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. Royal Fern and Apple Tree kingdom and all other plants kingdom is Plantaea.
Plant family is the group of plants which have something in common. Royal Fern and Apple Tree family is a major factor of Royal Fern and Apple Tree 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. Royal Fern belongs to the family Osmundaceae and Apple Tree belongs to the family Rosaceae.
While comparing scientific classification, Royal Fern and Apple Tree genus and other classification are also important. Also, when you compare Royal Fern and Apple Tree, other factors should also be taken into considerations like order, subfamilies, tribe, clade etc. First plant's genus is Osmunda and other plant's genus is Malus. Royal Fern tribe is Not Available and Apple Tree tribe is Not Available. Royal Fern clade is Not Available and order is Polypodiales whereas Apple Tree clade is Angiosperms, Eudicots and Rosids and order is Rosales. Every plant have subfamilies. Royal Fern subfamilies are, Not Available and Apple Tree subfamilies are Not Available. In this way you can compare scientific classification of Royal Fern and Apple Tree and other products also.