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Compare stomatal densities of the upper and lower epidermis of a leaf.
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| Submitted: Fri Sep 24 2004
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BIOLOGY - IT KEY SKILLS INTRODUCTION. The purpose of this assignment is to compare stomatal densities of the upper and lower epidermis of a leaf. This assignment of stomata is also relevant to my AS biology course as stomata is a key factor in transpiration of plants, and transpiration and the transport of water is a major section of the syllabus. This assignment will therefore help me to understand why transpiration occurs and how the stomata affect it as stomata's activity is related to the rate of transpiration. It is said that in general, the greater the number of stomata per unit area, the greater the rate stomatal transpiration, however distribution and densities are also important. Stomata are pores in the epidermis layer, which is found in the mesophyll spongy layer of the leaf. They are found mainly in leaves, but also in stems. There are two main functions of stomata 1. To allow gaseous exchange of...
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