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Photosynthesis quiz

All 9 questions. After you submit, each question shows the right answer and why. Back to the quick check

ExplorerQuestion 1 of 9

Which gas do plants give out during photosynthesis?

ExplorerQuestion 2 of 9

Leaves look green because chlorophyll does not absorb green light.

InvestigatorQuestion 3 of 9

In the overall equation 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂, how many molecules of oxygen are made for every one molecule of glucose?

InvestigatorQuestion 4 of 9

Through which openings does carbon dioxide get into a leaf?

ScientistQuestion 5 of 9

Where does the oxygen released by photosynthesis come from?

ScientistQuestion 6 of 9

Each turn of the Calvin cycle fixes one CO₂. How many turns are needed to make enough carbon for one glucose molecule (C₆H₁₂O₆)?

AdvancedQuestion 7 of 9

The Calvin cycle is correctly called the 'dark reaction' because it runs only at night.

AdvancedQuestion 8 of 9

Explain how the light-dependent reactions and the Calvin cycle depend on each other.

ExpertQuestion 9 of 9

Global net primary production has been estimated at about 104.9 Pg C per year with roughly equal land and ocean shares. What does this imply about where photosynthesis happens, and why should such a figure be treated as an estimate?