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Animal Tissues

Animal Tissues Synopsis

Synopsis

Levels of Organisation

  • Cell: The basic structural and functional unit of a living organism is called a cell. Examples: Nerve cell, muscle cell 
  • Tissue: A group of cells with a common origin and similar structure and function being held together by a cementing substance forms a tissue.
    Examples: Connective tissue, meristematic tissue 
  • Organ: Different types of tissues working together and contributing to some specific function of the body constitute an organ.
    Examples: Stomach, heart 
  • Organ system: Different organs coordinate to perform a specific life process and form an organ system.
    Examples: Digestive system, nervous system 
  • Organism: Various organ systems working simultaneously together constitute an organism.
    Examples: Plant, animal

Importance of Tissues

  • Formation of tissues ensures division of labour in multicellular organisms.
  • Tissues organise to form organs and organs form organ systems.
  • The workload of individual cells decreases due to the origin of tissues.
  • Improved organisation and higher efficiency ensure greater survival of multicellular organisms.

Differences between Plant and Animal Tissues

 Animal Tissues

 
 
Epithelial Tissue
  • Epithelial tissue forms the protective tissue in animals.



Types of Epithelial Tissue