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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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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.

short note on Phylum-Mollusca

 ◆The mollusca word comes from latin  word " mollis " means soft. Mollusca (soft bodied animals) ◆ Malacology - study of mollusca. ◆ Defination : Molluscs are soft bodied , Bilaterally symmetrical,unsegmented, Coelomate animals; usually shelled head and a dorsal visceral mass. ◆ Habitat : Molluscs are mostly marine ,few fresh water and some terrestrial forms. ◆Mollusca is the second largest      phylum of invertebrates. ◆About 1,28,000 species. ◆ body soft covered by mantle usually with an anterior head and a ventral muscular foot.Mentle secrets shell.Shell sometimes vestigial and sometimes in several pieces. ◆Coelom reduced. ◆ example  : Chiton, Pila(snail), Unio(mussel),Sepia, Loligo(squid), Nautilus, etc. Pila(snail)

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