ET Factors affecting photosynthesis 12/2/24

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What is photosynthesis?

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Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose, using carbon dioxide and water.

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What are the main factors affecting the rate of photosynthesis?

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The main factors affecting the rate of photosynthesis include light intensity, carbon dioxide concentration, temperature, and water availability.

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How does light intensity affect photosynthesis?

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Increasing light intensity generally increases the rate of photosynthesis up to a certain point, after which it may plateau or decrease due to other limiting factors.

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What role does carbon dioxide play in photosynthesis?

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Carbon dioxide is one of the raw materials needed for photosynthesis; it is absorbed by plants through their stomata and used to produce glucose.

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What is the significance of stomata in plants?

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Stomata are small openings on the surfaces of leaves that allow for gas exchange; they enable the intake of carbon dioxide and the release of oxygen.

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What is the byproduct of photosynthesis?

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The byproduct of photosynthesis is oxygen, which is released into the atmosphere as a result of the process.

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How does temperature affect photosynthesis?

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Temperature affects the enzymes involved in photosynthesis; optimal temperatures increase the rate of photosynthesis, while extreme temperatures can inhibit it.

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What happens to photosynthesis during hot, dry weather?

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During hot, dry weather, plants may close their stomata to conserve water, which reduces carbon dioxide intake and subsequently decreases the rate of photosynthesis.

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What is the relationship between photosynthesis and cellular respiration?

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Photosynthesis produces glucose and oxygen, which are used in cellular respiration to produce energy (ATP), carbon dioxide, and water.

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What is the effect of increased carbon dioxide concentration on photosynthesis?

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Increased carbon dioxide concentration can enhance the rate of photosynthesis, provided that other factors such as light and temperature are also favorable.