WorksheetsFactors Affecting Photosynthesis
Total questions: 15
Worksheet time: 15mins
Identify the diagram
Photometer
Potometer
Clinostat
Potometre
Which of the following factors affect the rate of photosynthesis?
Carbon dioxide concentration
Water concentration
Temperature
Light intensity
Oxygen concentration
On this photosynthesis practical, bubbles of gas are produced. What is this gas?
Carbon dioxide
Hydrogen
Chlorine
Oxygen
How is the leaf adapted to do photosynthesis?
The leaf's upper layer is thin and transparent to allow light to pass through.
The leaf's palisade layer has the most chloroplast to absorb the maximum amount of light possible.
The leaf's lower layer has many stomata to allow gases to diffuse.
All of the descriptions above are true.
What THREE factors affect the rate of photosynthesis?
Light intensity
Carbon dioxide
Temperature
Water availability
How does the amount of carbon dioxide available affect photosynthesis?
As carbon dioxide availability increases, the rate of photosynthesis increases. Then, beyond a certain point, it levels off due to other limiting factors.
As carbon dioxide availability increases, the rate of photosynthesis decreases. Then, beyond a certain point, it increases due to other limiting factors.
Why can chlorophyll also be a limiting factor?
Factors like disease or nutrient deficiencies can damage chloroplasts or reduce chlorophyll production, affecting photosynthesis.
Factors like disease or nutrient deficiencies can damage mitochondria or reduce chlorophyll production, affecting photosynthesis.
How does light intensity affect photosynthesis?
As light intensity increases, the rate of photosynthesis initially increases. Then, beyond a certain point, it levels off due to other limiting factors.
As light intensity increases, the rate of photosynthesis initially decreases. Then, beyond a certain point, it declines due to other limiting factors.
Which of the following factors can limit the rate of photosynthesis in plants?
Light intensity
Oxygen concentration
Soil type
Leaf size
What is the role of chlorophyll in photosynthesis?
Absorbs light energy
Converts glucose to energy
Releases oxygen
Absorbs carbon dioxide
How does temperature affect the rate of photosynthesis?
Increases indefinitely with temperature
Decreases with increasing temperature
Increases to an optimum point then decreases
Is not affected by temperature
In an experiment, a plant is placed under different colored lights. Which color is least effective for photosynthesis?
Red
Blue
Green
Yellow
Which gas is a byproduct of photosynthesis?
Carbon dioxide
Oxygen
Nitrogen
Hydrogen
What happens to the rate of photosynthesis if the concentration of carbon dioxide is increased?
It decreases
It remains constant
It increases and then levels off
It stops completely
Why is water essential for photosynthesis?
It is a source of carbon
It provides electrons and protons
It absorbs light energy
It is a byproduct of the process
