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Leaves
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Leaves play an important role for the plant!
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What leaves do for the plant
Control amount of water in the plant Transpiration – water vapor evaporates through the stomates Exchange gases () Carbon Dioxide in and Oxygen out hrough the stomates Make the food for the plant Photosynthesis
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The loss of water through the leaves by evaporation
Transpiration The loss of water through the leaves by evaporation
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Stomates Tiny openings found on the underside of leaves
Have guard cells on either side to open and close Open during photosynthesis to take-in carbon dioxide and release oxygen and water vapor
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A cross-section of a leaf with Stomata
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What the stomata make happen!
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Photosynthesis
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Photosynthesis! Photosynthesis Requires: Photosynthesis Produces:
carbon dioxide (from the air) water (from the soil) light energy chlorophyll (green pigment to absorb light energy) Photosynthesis Produces: glucose (sugar to “feed” the plant) oxygen (a waste product) Water vapor
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Here is another way of understanding how photosynthesis happens.
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Once more to help explain
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Glucose What is glucose anyway? Type of sugar
Plants consume the sugar they create for energy to help them grow Animals consume plants to get that same sugar for energy
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Breathe in, Breathe out Plants “breathe” in carbon dioxide and “breathe” out oxygen – this is how plants “exchange gases”! Animals do the opposite of plants – we breathe in oxygen and breathe out carbon dioxide This happens during photosynthesis through the stomates Without plants we would not have oxygen to breathe!
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A little more information about Xylem and Phloem!
Bonus Material A little more information about Xylem and Phloem!
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Xylem and Phloem
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The flow in xylem and phloem
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Transpiration and Photosynthesis simplified
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