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Stomatal Density Aim: To investigate the stomatal density of different leaves. Apparatus: * Light microscope * Distilled water * Water pipette * Microscope slide * Cover slip * Scalpel * Forceps * Colourless varnish * Ruler * 4 different types of leaves: 1. 2. 3. 4. Hypothesis: The stomatal density of plants is dependant on their habitat. The key factor which the stomatal density will depend upon will be the water supply and the extent to which the environmental factors of each plant affect their transpiration rate. Since the four leaves being investigated come from plants which vary to quite a large extent from each other in different aspects, I think there will be variations in their stomatal density, depending on how different their habitats are. Leaves whose habitats have very different water supply patterns will show great variation in their stomatal density. Leaves 1 and 4 live in hot desert areas which lack in water supply. I therefore expect them to have low stomatal densities to minimise...

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