Biological classification is the scientific procedure of arranging organisms into groups and subgroups on the basis of their similarities and dissimilarities and placing the group in a hierarchy of categories. Importance of classification :- It is not possible to study every organism. Study of one or two organism of a group gives sufficient information about the essential features of the group. It helps in identification of new organism. Classification helps in knowing the relationship amongst different groups of organisms. The organism of past cannot be studied without a proper system of classification. Classification :- (i)Artificial system of classification (ii)Natural system of classification (iii)Phylogenetic system of classification (i)Artificial system of classification- Only one or two morphological characters for grouping of organism is used. Flowering and non-flowering plants, enaima and anaima. Aristotle classification. (ii)Natural system of classificati...
Minor Phyla : Entoprocta Sessile Body of calyx and slender. Digestive tube U shaped Mostly marine. Mouth and anus close together, surrounded by tentacular crown. Entoprocta Temporal range: Early Cambrian–Recent Pre๊ ๊ O S D C P T J K Pg N [1] [2] Barentsia discreta Scientific classification Kingdom: Animalia Subkingdom: Eumetazoa Clade : ParaHoxozoa Clade : Bilateria Clade : Nephrozoa (unranked): Protostomia (unranked): Spiralia Superphylum: Lophotrochozoa Clade : Lophophorata Phylum: Entoprocta Nitsche , 1870