11th Class Biology Anatomy of Flowering Plants

  • question_answer 54)
      The stomatal pore is guarded by two kidney shaped guard cells. Name the epidermal cells surrounding the guard cells. How does a guard cell differ from an epidermal cell? Use a diagram to illustrate your answer.


                      The epidermal cells surrounding the guard cells of stomata are called subsidiary cells. Differences between guard cells and epidermal calls are
    Guard cells Epidermal cells
    They are bean or kidney shaped. They possess chloroplasts. They are smaller. Cell walls of guard cells are not uniform and thicker. They are barrel shaped. They ladk chloroplasts. They are bigger. Epidermal cells are uniformly thin.
    Diagrammatic representation (a)stomata with bean-shaped guard cells (b)Stomata with dumb-bell shaped guard

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