Which substance is not required by plants for photosynthesis?
Carbon dioxide
Oxygen
Water
Why do plants carry out photosynthesis?
To make energy
To make oxygen
To make sugar
What is the role of chlorophyll in photosynthesis?
To produce sugar
To trap heat energy
To trap light energy
Which energy conversion occurs as a result of photosynthesis?
Chemical energy to heat energy
Heat energy to light energy
Light energy to chemical energy
Which word equation correctly describes the process of photosynthesis?
\[\text{carbon\,dioxide} + \text{oxygen} \to \text{sugar} + \text{water}\]
\[\text{carbon\,dioxide} + \text{water} \to \text{sugar} + \text{oxygen}\]
\[\text{sugar} + \text{oxygen} \to \text{carbon\,dioxide} + \text{water}\]
Which of the following is a limiting factor of photosynthesis?
Availability of carbon dioxide
Availability of oxygen
Availability of sugar
What are the two major limiting factors of photosynthesis?
Carbon dioxide concentration and temperature
Temperature and oxygen concentration
Oxygen concentration and carbon dioxide concentration
If the light intensity is low, what effect does increasing the light intensity have on the rate of photosynthesis?
Decreases the rate
Increases the rate
No effect on the rate
Which limiting factor of photosynthesis is likely to have the greatest effect on plants growing in an open field on a hot summer day?
Carbon dioxide availability
Light intensity
Temperature
Which factor controls the reactions of photosynthesis reactions?
Chlorophyll
Enzymes
Light