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Introduction |
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Every organism whether plant or animal is unique in itself. There is a wide diversity in the flora (plants) and fauna (animals) in the world. |
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Importance of Classification |
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By making a comparative study and assorting the similarities and differences amongst the various varieties of species, organisms can be classified into groups or sets. |
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Nomenclature |
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Carl Linnaeus, father of modern botany, was a Swedish naturalist who laid the foundation of modern classification and nomenclature in 1758. |
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Classification of Plants and Animals |
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Cellulose cell wall surrounds the cell membrane.Cell wall is absent in animal cells. |
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Plant Kingdom |
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The plant body is not differentiated into stem, root and leaves but is in the form of an undivided thallus. |
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Animal Kingdom |
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The Animal Kingdom is divided in several phyla mainly on the basis of the cell organisation, symmetry, presence or absence of notochord and body cavity. |
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Phylum Protozoa (Primitive Animals) |
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Unicellular (single celled) animals.Nutrition is heterotropic. |
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Phylum Porifera (Sponges) |
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The simplest multicellular animals. The cells are loosely held together and do not form tissues. |
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Phylum Coelenterata (Cridaria) |
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The simplest multicellular animals. The cells are loosely held together and do not form tissues |
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Phylum Platyhelminthes (Flatworms) |
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Simplest triploblastic organisms showing bilateral symmetry.Mostly parasites in other animals. |
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Phylum Aschelminthes (Round or Thread Worm) |
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Mostly parasites in other animals.Parasitic or free living. |
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Phylum Annelida (Segmented Worms) |
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Body is covered by a non-chintinous cuticle which may have chitinous setae, or parapodia. |
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Phylum Arthropoda (Animals with Jointed Legs) |
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Body is bilaterally symmetrical and segmented. It is divided into head, thorax and abdomen. |
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Phylum Mollusca |
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Body is soft and divided into three regions (head, dorsal visceral mass and ventral foot). |
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Phylum Echinodermata |
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Body is radially symmetrical, star shaped, spherical or elongate, Exoskeleton is spiny. |
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Phylum Hemichordata |
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Have characteristics of both invertebrate and chordate. |
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Phylum Chordata |
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Phylum Chordata is characterized by three unique features, at least during the early stages of their development. |
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Question and Answers |
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Multiple Choice Questions |
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