Question

The cell is the basic structural unit of living organisms. What does the statement mean?

Answer 1

• The cells are called as structural and functional units of a living body. Cells are a structural unit as they form the structure of the organism. They are the base of the organisation. Cells combine to form tissues, which further combine to form organs, organs combine to form organic systems, which further combine to form the organism. So, the cell is the basic structural unit for all unicellular and multi-cellular organisms.
  
• Some of the basic life processes or functions take place in every cell to keep the organisms alive such as digestion, respiration, excretion, etc., whether it is a single-celled organism or multi-cellular organism. So, the cells are also called the functional unit of life owing to these processes.