Beautiful Leaves Contribute Form and Function
What would it be like to have super magnified vision? Imagine you could look at something so closely that you could see it as a group of cells. This mystery picture is a leaf shown as it might look if you used a microscope. Before I go any further, look closely at the picture and describe what you see. (Be sure to use colors, shapes and arrangement in your description.)
click on the picture to get a bigger view of the leaf. What do you think
the pink layer might be? Tulip leaves, like all leaves, have many cellular
layers. These layers have a real special job for the plant.
some plant leaves seem to shed water while others get evenly wet? The bluish color of the leaf tells us that the cells at the leaf surface (the epidermis) have some wax in them. Most plants have wax in their epidermis. The wax is important. It can even act as a kind of sun screen for the leaf!
If you take a look at the shape of the leaf you can clearly see that the shape contributes to repelling water, too. The curved shape and pointed tip act to collect and direct rainwater downward to the soil where the roots can use it.
Living systems at all levels of organization demonstrate the complementary nature of structure and function. (5-8)
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