Gizmo Photosynthesis Lab

Which of the following can be used to measure the rate of photosynthesis?

• light intensity (%)

• oxygen production (mL/hr)

• CO2 level

According to the graph below, what temperature will result in the highest rate of photosynthesis?

• 5°C

• 25°C

• 40°C

Based on what you have observed in the Gizmo, which of the following chemical equations represents photosynthesis?

• CO_{2(carbon dioxide)} + H₂O (Water)→ glucose +oxygen

• CO_{2(carbon dioxide)} + oxygen→ water+glucose

• glocuse+water→ CO_{2(carbon dioxide)} + oxygen

A scientist wants to determine the best light wavelength for growing plants. He grows plants in four test groups. What should he change in each group?

• The amount of water and light wavelength

• The amount of carbon dioxide

• ONLY the light wavelength

Chlorophyll is green because it absorb the least amount of green color.

If chlorophyll were red instead of green, making plants red in appearance, which color of light would you expect to produce the LOWEST rate of photosynthesis?

• White

• Blue

• Red