Investigate the effect of light intensity on the rate of photosynthesis (LC 2026) (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What three factors affect the rate of photosynthesis?
What three factors affect the rate of photosynthesis?
Light intensity, temperature, CO₂ concentration
What is measured to determine the rate of photosynthesis in this experiment?
What is measured to determine the rate of photosynthesis in this experiment?
Number of oxygen bubbles per minute
What does sodium bicarbonate provide for the plant?
What does sodium bicarbonate provide for the plant?
A source of CO₂
Why is an aquatic plant used instead of a terrestrial plant in this experiment?
Why is an aquatic plant used instead of a terrestrial plant in this experiment?
Easier to see and count O₂ bubbles
How should the elodea stem be cut?
How should the elodea stem be cut?
Cut at an angle
How long is the adjustment period before counting oxygen bubbles?
How long is the adjustment period before counting oxygen bubbles?
One minute
For how long are oxygen bubbles counted at each distance?
For how long are oxygen bubbles counted at each distance?
One minute
How many oxygen bubbles were produced per minute at 60 cm distance?
How many oxygen bubbles were produced per minute at 60 cm distance?
10
How many oxygen bubbles were produced per minute at 100 cm distance?
How many oxygen bubbles were produced per minute at 100 cm distance?
0
What happens to photosynthesis rate as light intensity increases initially?
What happens to photosynthesis rate as light intensity increases initially?
The rate increases up to a point
What is the saturation point in this experiment?
What is the saturation point in this experiment?
Where no further bubble increase occurs
At which distances did the results show the saturation point had been reached?
At which distances did the results show the saturation point had been reached?
40 cm and 20 cm