Two - Kingdom Classification Carolus von Linnaeus the Swedish Naturalist in grouped living organisms into plants and animals. This is also known as Two. The two kingdom classification system was given by Carlous Linaaeus in Carlous Linnaeus classified living things into two kingdoms Animal Kingdom which he called as Regnum Animale for animals and for plants he gave the Vegetable Kingdom which he called as Regnum Vegetabile; now known as the Plant Kingdom. Two Kingdoms Classification: In his Systema Naturae, first published in , Carolus Linnaeus distinguished two kingdoms of living things: Animalia for animals and Plantae (Vegetabilia) for plants. He classified all living organisms into two kingdoms – on the basis of nutrition and locomotion (mobility).


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Cells lack cell walls. They contain glycogen or fat as reserve food.


The organization may be cellular level poriferatissue level colenteratesorgan level Platyhelminthes and Nemathelminthcs and Organ system level Annelids, Arthropods, Molluscs, Echinoderms and Chordates.

Symmetry may be radial, biradial, bilateral or asymmetrical. Two kingdom classification the basis of number of germ layers in embryonic gastrula, animals are diploblastic and triploblastic.

On the basis of presence of absence of coelom two kingdom classification cavity the animals are coelornates, pseudocoelomates or acoelomates.

Merits and Demerits of Five Kingdom: Kingdom animalia become more homogenous with the separation of protozoa. Kingdom plantae also become more homogeneous with the exclusion of bacteria, fungi and some unicellular algal forms. Separation of prokaryotes into a separate kingdom — Monera is due for two kingdom classification time.

Separation of fungi from plants is a wise step. Separation of intermediate or transitional forms of unicellular eukaryotes into kingdom — Protista is well thought out. So that the plant and animal kingdoms become more systematic.

It brings our phylogenetic relationships in the living world.


The Monera and Protista kingdoms are still heterogenous because both include autotrophic and heterotrophic forms and some with or without cell wall.

Phyolgeny in lower organisms is not fully reflected.

Red and brown algae are not related to other members of kingdom plantae. Viruses have not been included in this system of classification. Six Kingdoms and Three Domains Classification In the years around there was an two kingdom classification on phylogeny and redefining the kingdoms to be monophyletic.

The Animalia, Plantae, and Fungi were generally reduced to core groups of closely related forms, and the two kingdom classification thrown into the Protista. Such six-kingdom systems have become standard in many two kingdom classification.

InCarl Woese proposed that the Eubacteria, Archaebacteria, and Eukarvota represent three primary lines of descent and accordingly he promoted them to domains, naming them Bacteria, Archaea, and Eukarya.

This three-domain classification has received notable criticism but has generally displaced the older two-empire system as a way of organizing kingdoms together.

Two kingdom classification

Body of animals exhibits a definite symmetry, form and shape. Animals can move from place to place. Body growth two kingdom classification animals is determined and it occurs proportionately in all body parts.

Animals possess the capacity oto respond to stimulus. Animal body is also made up of cells, the cells do two kingdom classification have cell wall. The cells do not contain plastids and vacuoles.

Centrosomes and lysosomes are present. Animal cells cannot synthesize some necessary amino acids, vitamins, and co-enzymes on their own, they are to be obtained from external sources.

Two kingdom classification - NEET Lab

Reserve food two kingdom classification in the form of glycogen. Classification of Kingdom Animalia The animal kingdom is classified as follows: As more information came into picture about various groups of plants and organisms, this system was found to be inadequate.

The father of classification is Carolus Linnaeus.