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General characters of phylum mollusca with point

 • Body type : Body is soft , unsegmented ,     Bilate rally symmetrical.   • Body parts : Body consist of head , foot, mantle and   visceral mass.  • Shell : Body is protected by exoskeleton.   calcareous  shell secreted by mantle. • Head : Head is distinct , bearing the mouth and provided with eyes , tentacles and other sense organs. • Respiratory organs : Respiratory organs consist of numerous gill or ctenidia usually provided with osphradium at the base. Lung is developed in terrestrial forms. • Body cavity : Body cavity is haemocoel. • Radula : pharynx contains a raspindg organ, the Radula . • Excretory organs : Excretory organs consists of pair of metanephridia. • Sex : Sexes usually separate (dioecious) but some are hermaphroditic. • Fertilisation : Fertilisation is external or internal. • Development : Development is either direct or with metamorphosis through trochophore stage.
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Systematic position of white ants or termites

 Kingdom - Animalia Phylum - Mandibulata Class - Insecta Subclass - Pterygota Division - Exopterygota Order - Isoptera Type - Termite 
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Social life of termites or white ants

Termites are social insects belonging to the class- insecta , order- isoptera. They live in large colony with organized social structures. The social life of termites characterized by division of labor, communication and cooperative behaviour. 1. Division of labour :   Termites exhibit a remarkable division of labour with different individual performing specific tasks. A reproductive termites (king and queen) responsible for reproduction and expanding the colony. Worker are sterile individuals at perform various duties,such as finding food, building and caring for the young and eggs,feed the nymphs,king and queen etc. The division of labour ensure that efficient functioning and survival of the termite colony. 2. Communication : (a) Secreting chemical : Termites communicate through chemical signal called pheromones. Pheromones plays an important role in the colony. • Each colony develops its own characteristics odour. •  And intruder is instantly recognized and an  a...
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Systematic position of earth worm

 Kingdom - Animalia Super phylum - Lophotrochozoa Phylum - Annelida Class - Oligochaeta Order - Opisthopora Genus - Pheretima Species - posthuma Pheretima posthuma
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Systematic position of cockroach

  Phylum : Arthropoda Sub phylum : Mandibulata Class : Insects Subclass : Pterygota Division : Exopterygota Order : Dictyoptera Family : Blattidae Genus : Periplaneta Species : americana   Small black cockroach's scientific name - Blatta orientalis
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Systematic position of a wolf

  Kingdom :  Animalia  Phylum     :  Chordata  Sub phylum :  Vertebrata  Class         :   Mammalia  Order       :   Carnivora Sub order : Canidformia Family     :    Canidae Genus      :      canis Species    :      lupus
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Systematic position of a human

Kingdom        :  Animalia Phylum           :  Chordata Sub phylum :  Vertebrata Division.        :  Cnathostomata Super class  :  Tetrapoda Class.              :  Mammalia Sub Class       :  Theria Infra class    :  Eutheria Order             :  Primates Sub order     :  Anthropoids Genus            :   Homo Species          :   sapiens
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