Question

Explain why in Amoeba all life process can be done through diffusion and not in human beings?

Answer 1

• In unicellular organisms, a single cell governs all the activities of the cell so only through diffusion materials like gases, water etc can exchange between the environment and the cell.
  
• But in case of a multicellular organisms there is separate system for separate function. Many cells clustered together to form tissues, tissues to organs and organs to organ system. So through diffusion the process of exchange of materials between the organism and the environment is not fulfilled
  
• Multicellular organisms have a complicated system so diffusion is not the process which can fulfil the requirements of the organisms.
  
• For instance, in human beings diffusion of gas from the head to the feet can take up to 3 years.
  
• Therefore, diffusion is not efficient in performing different functions that are required for a multicellular organism to live.