2.6 Energy: Photosynthesis

Front

Which correctly explains the role plants (and organisms that use photosynthesis) play in the greenhouse effect?

Back

They absorb and store carbon (dioxide) in their tissue, which is a greenhouse gas.

Front

__________ primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.

Back

Gross

Front

If gross primary productivity in a wetland is 3 kg C/m^2/year and respiration is 1.5 kg C/m^2/year, what is the net primary productivity of the wetland?

Back

1.5 kg C/m^2/year

Front

Using the graph below which statement is correct: Which of the following best explains why the NPP of the ocean is the highest? There are many producers, ample sunlight, and lots of water in tropical rainforests. There is lots of sunlight, but little plants and water available. Phytoplankton leave near or at the surface. There are many plants that live near the coast.

Back

Phytoplankton leave near or at the surface.

Front

A wetland ecosystem produces 4,000 kcal/km2/year of glucose and stores 1,500 kcal/km2/year of that glucose. How much glucose do the producers use for energy?

Back

2,500 kcal/km2/year