Required Practical: Photosynthesis Rate (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
What is measured in the pondweed photosynthesis practical?
What is measured in the pondweed photosynthesis practical?
Oxygen produced
Purpose of sodium hydrogen carbonate in practical
Purpose of sodium hydrogen carbonate in practical
To provide a consistent source of CO₂
What does bubble distance indicate in photosynthesis practical?
What does bubble distance indicate in photosynthesis practical?
Volume of oxygen produced/rate of photosynthesis
Effect of light intensity on photosynthesis rate
Effect of light intensity on photosynthesis rate
Increases then levels off (another factor becomes limiting)
Effect of temperature on photosynthesis rate
Effect of temperature on photosynthesis rate
Increases to optimum, then decreases (enzymes denature)
Effect of CO₂ concentration on photosynthesis rate
Effect of CO₂ concentration on photosynthesis rate
Increases until another factor becomes limiting
What is a limiting factor in photosynthesis?
What is a limiting factor in photosynthesis?
A factor that restricts/controls the rate of photosynthesis
Example aquatic plant used in photosynthesis practical
Example aquatic plant used in photosynthesis practical
Pondweed (Elodea)
Typical time period for measuring oxygen bubble movement
Typical time period for measuring oxygen bubble movement
5 minutes
Application of understanding photosynthesis limiting factors
Application of understanding photosynthesis limiting factors
Optimising plant growth in greenhouses