Food Production & the environment

Food Production & the environment - Food Production...

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Food Production Action in Plants
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Plant cells Plant cells contain a jelly-like cytoplasm They all have a nucleus They usually have a sap-filled vacuole The cell is surrounded by a cell membrane Around the cell membrane there is a cellulose cell wall Plant cells in green parts of a plant like leaves also contain chloroplasts
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Animal cells Animal cells contain: a nucleus, cytoplasm cell membrane but unlike plant cells they do not have cellulose cell walls or chloroplasts
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Photosynthesis This is the process by which plants produce their own food Photosynthesis occurs in the chloroplasts found in cells in leaves Carbon dioxide is reacted with water to produce glucose and oxygen Chlorophyll and sunlight energy is required for this reaction to take place
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Chloroplasts The cells found in leaves have lots of chloroplasts for photosynthesis to take place in.
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Sunlight & chlorophyll CO 2 + H 2 O C 6 H 12 O 6 + O 2
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What factors can affect the rate of photosynthesis? The concentration of carbon dioxide will affect the rate of photosynthesis As sunlight is needed for photosynthesis, the light intensity will also affect the rate of photosynthesis Also, the temperature will also affect the rate of this reaction From the equation for photosynthesis we can see that the amount of water available would also affect the rate of photosynthesis Water + carbon dioxide glucose + oxygen 6 H 2 O + 6 CO 2 C 6 H 12 O 6 + 6 O 2
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The interdependance between plants and animals Plants need to have a supply of carbon dioxide in the air so they can use it fir
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Food Production & the environment - Food Production...

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