Investigate the effect of light intensity on the rate of photosynthesis (LC 2026) (Leaving Cert Biology): Flashcards
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Practise the cards
12 cards from this deck
What 3 factors affect photosynthesis rate?
What 3 factors affect photosynthesis rate?
Light intensity, temperature, CO₂ concentration
What is measured in this photosynthesis experiment
What is measured in this photosynthesis experiment
Oxygen bubbles produced per minute
What sodium bicarbonate provides for photosynthesis
What sodium bicarbonate provides for photosynthesis
CO₂
Why use aquatic plant instead of terrestrial plant
Why use aquatic plant instead of terrestrial plant
Easier to see and count O₂ bubbles
Why cut elodea stem at an angle
Why cut elodea stem at an angle
Ensures efficient oxygen production
Adjustment period before counting bubbles
Adjustment period before counting bubbles
One minute
Duration of bubble counting period
Duration of bubble counting period
One minute
Distances tested in experiment
Distances tested in experiment
1m, 80cm, 60cm, 40cm, 20cm
O₂ bubbles per min at 100cm distance
O₂ bubbles per min at 100cm distance
0
O₂ bubbles per min at 40cm and 20cm
O₂ bubbles per min at 40cm and 20cm
15
Effect of increasing light intensity on photosynthesis
Effect of increasing light intensity on photosynthesis
Rate increases up to a certain point
Saturation point definition
Saturation point definition
Where no further increase in bubbles occurs with more light