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21 Cards in this Set
- Front
- Back
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Word Equation For Photosynthesis
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Carbon dioxide + water = glucose + oxygen
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Chemical Equation
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6CO(2) + 6H(2)O = C(6)H(12)o(6) + 6O(2)
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What is the rate of photosynthesis affected by?(3)
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Carbon dioxide, Light intensity, Temperature
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How is the structure of the leaf adapted for photosynthesis and gas exchange?
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Chloroplasts , Large surface area for diffusion, And stomata for gas exchange to leaf
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What mineral ions are required for growth?
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(Nitrate, makes amino acid and builds proteins) (Magnesium to make chlorophyll)
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Word Equation For Photosynthesis
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Carbon dioxide + water = glucose + oxygen
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Chemical Equation
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6CO(2) + 6H(2)O = C(6)H(12)o(6) + 6O(2)
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What is photosynthesis?
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Building up of food compounds from carbon dioxide and water by green plants using energy from sunlight which is absorbed which is absorbed by chlorophyll.
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What is the rate of photosynthesis affected by?(3)
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Carbon dioxide, Light intensity, Temperature
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How is the structure of the leaf adapted for photosynthesis and gas exchange?
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Chloroplasts , Large surface area for diffusion, And stomata for gas exchange to leaf
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What mineral ions are required for growth?
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(Nitrate, makes amino acid and builds proteins) (Magnesium to make chlorophyll)
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What is glucose made out of?
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Light energy, water carbon dioxide, water
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What is glucose converted into and where is it stored?
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Starch, stored in the chloroplasts
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Limiting factor?
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The component of a reaction that is in short supply so it limits the rate in which the reaction can take place.
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Limiting Factors of Photosynthesis
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Intensity of light, the concentration of carbon dioxide, temperature.
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What do plants need beside photosynthesis?
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Mineral ions taken from the soil.
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What mineral ions do plants need?
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Nitrates - amino acids that are built up into proteins, magnesium - chlorophyll.
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What are the adaptations of leaves?
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(Broad, flat shape - large surface area)(Thin- short distance for carbon dioxide to pass through) ( Large spaces between cells - Easier for carbon dioxide to diffuse through) ( Many stomata - easier exchange, carb. dio. and oxy.)
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Plant Respiration
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In respiration, plants (and animals) convert the sugars (photosynthates) back into energy for growth and other life processes (metabolic processes). The chemical equation for respiration shows that the photosynthates are combined with oxygen releasing energy, carbon dioxide, and water.
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What do plants need along with sugars to make other substances?
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Mineral salts; nitrates, phosphate, and potassium.
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Describe the use of carbon dioxide enrichment,optimum light and optimum temperatures inglasshouses in temperate and tropical countries: |
In a closed glasshouse, it is possible to provide extra CO2 for the plants, e.g. by burning fossil fuels or releasing pure CO2 from a gas cylinder. (1) In cloudy or dark conditions, extra artificial lighting can be provided, so that light is not limiting the rate of photosynthesis. (2)The temperature in the glasshouse can be kept at the optimum level to encourage the tomatoes to grow fast and strongly, and to produce a large yield of fruit that ripens quickly. |
