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Learn: Photosynthesis
Edexcel Combined Science GCSE
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Welcome!Today we'll learn about photosynthesis, a key process in plants. It's how they make their food and release oxygen into the air. Let's explore step by step!
What is Photosynthesis?Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose (a type of sugar) and oxygen. It happens in the chloroplasts of plant cells, which contain chlorophyll.
Why is Photosynthesis important?Photosynthesis provides food for plants, which forms the base of most food chains. It also releases oxygen into the atmosphere, which is essential for humans and animals to survive.
What is the main product of photosynthesis?
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What are the reactants of Photosynthesis?The reactants are the substances that start the process. For photosynthesis, the reactants are: Carbon dioxide (from the air)Water (absorbed by roots) These reactants combine in the presence of sunlight and chlorophyll.
The two main raw materials of photosynthesis are {{blank0}} from the air and {{blank1}} absorbed by the roots.
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What are the products of Photosynthesis?The products of photosynthesis are: Glucose: Stored as starch or used for energyOxygen: Released into the air Plants use the glucose for growth and energy.
Match the items on the left with their correct pairs on the right
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Equation for PhotosynthesisThe equation for photosynthesis is: 6CO2 + 6H2O → C6H12O6 + 6O2It shows that carbon dioxide and water, in the presence of light, produce glucose and oxygen.
Which of the following represents the photosynthesis equation?
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Factors Affecting PhotosynthesisPhotosynthesis is affected by: Light intensity: More light increases the rate.Carbon dioxide concentration: Higher levels increase the rate.Temperature: It works best within a certain range (usually 10-35°C).
Which of the following can affect the rate of photosynthesis? (Select all that apply)
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Review Time!Great work! You've learned about photosynthesis, the equation, its reactants and products, and the factors that affect its rate. Let's test your understanding with a few final questions.
Match the items on the left with their correct pairs on the right
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Photosynthesis happens in the {{blank0}} of plant cells, where {{blank1}} absorbs sunlight.
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Match the items on the left with their correct pairs on the right
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