9th Class Science The Fundamental Unit of Life

  • question_answer 49)
      Do you agree that 'A cell is a building unit of on organism'. If yes, explain why?

    Answer:

      A cell is composed of various organelles which perform different function. A cell is structural, functional and smallest unit of life capable of all living functions, The number of cells vary from organism to organism. An Ameoba is single celled or unicellular, where all the basic functions are performed in one cell. On the contrary, a human is multi cellular having as many as 60 x 1015 cell (weight about 60 kg). In a multi cellular organism, cell form tissues, which in turn together form organs and? different functions are performed by different organs i.e., they have well-developed division of labour.


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