Photosynthesis Practical Quiz

What is the aim of the photosynthesis practical?

• To investigate the effect of light intensity on the rate of photosynthesis

• To measure the number of O₂ bubbles formed per minute

• To study the process of photosynthesis in aquatic organisms

• To determine the effect of sodium hydrogen carbonate on photosynthesis

Any variable that can be changed and must be kept the same in an experiment is called a(n) ​ (a)   variable

• independent
• dependent
• controlled independent

The variable that is changed in an experiment is called a(n) ​ (a)   variable

• independent
• dependent
• controlled independent

Match the following variables for the experiment

• Light intensity
• Controlled variable
• The number of bubbles produced

• Independent variable
• Pondweed by itself with no lamp

• Control

• The length of pondweed

• Dependent variable

The variable that is measured as the outcome/result in an experiment is called a(n) ​ (a)   variable

• independent
• dependent
• controlled independent

What is the independent variable in this experiment?

What is the dependent variable in this experiment?

What is one of the controlled independent variables in this experiment?

Which equipment is NOT required for the photosynthesis practical?

• Boiling tube

• Light source

• Test tube rack

• Microscope

Sodium hydrogen carbonate reacts to release CO_2. What is the purpose of sodium hydrogen carbonate in the practical?

• To provide a source of oxygen for photosynthesis

• To increase the light intensity

• To measure the rate of photosynthesis

• To provide a source of carbon dioxide for photosynthesis