Investigate distribution of stomata and guard cells

• The stem, root and leaves form an organ system that transports substances into, around and out of a plant.
• Part of Biology (Single Science) Organisation
• The density of stomata on a leaf is recorded per unit area, usually the number per square mm.
• A microscope is calibrated to set an instrument or scale against a standard, so that its field of view is known.
• The mean count of stomata in the field of view is calculated by taking the average of the total number of stomata.
• The number of stomata over 1 mm 2 is calculated by multiplying the average count by the area of the field of view.
• The area of the field of view can be calculated using the formula πr 2, where π = 3.14 and r is the radius of the field of view.
• The density of stomata is calculated by dividing the number of stomata over 1 mm 2 by the area of the field of view.
• The number of stomata in the field of view is recorded, and the area of the field of view is calculated, to determine the density of stomata over 1 mm 2.
• The average count of stomata in the field of view is calculated by dividing the total number of stomata by the area of the field of view.