2.2.2a Cell

Cell specialisation

  1. Cell specialisation means division of labour among cells. Each type of cell specialises in a specific function.
  2. Importance of Cell Specialisation
    1. Cells can perform specific task with greater efficiency.
    2. Enable multicellular organisms adapt to various environment.

Cell Specialisation in Animal

Cell Function
Red blood cells Transport oxygen
White blood cells Destroy microorganisms. Engulf foreign substance in the blood stream.
Smooth muscle cells Contract and release to produce movement
Nerve cells Transmits nerve impulse

Cell Specialisation in Plant

Cell   Function 
Palisade Mesophyll Cells Carries out photosynthesis
Guard Cells Control the size of the stomata pore to allow gaseous exchange.
Xilem Transport water and mineral salt
Phloem Transport disolved food.

Cell Organisation in Multicellular Organism

Cytology (Cell Biology)

Cytology is an academic discipline that studies cells. It’s also known as Cell Biology.


histology is the study of the microscopic anatomy of cells and tissues of plants and animals.

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