Ecosystems Practice Problems

The NPP of a forest is 10,000 kcal/m²/year. How much of this energy will be available to primary consumers?

Which one of the following factors can decrease the productivity of an ecosystem?

Primary productivity is the production of biomass at the level of:

Which of the following consumers will receive more energy in a food chain?

Which of the following factor(s) limits the productivity of aquatic ecosystems?

The two most important and largest natural carbon sinks include____and____:

Which one contains the highest percentage of Nitrogen?

The organisms that feed on dead organisms and release minerals and nutrients into the soils are termed:

Choose the correct labels for A, B, and C in the following ecological pyramid.

All living things in an ecosystem rely on all other living and non-living things for food and other necessities in order to survive. This interdependence is referred to as a/the

The nutrients from the biomass of plants and animals are released back into the environment during _____.

A reforestation program was conducted in Rio Grande Watershed. This activity will result in all of the following EXCEPT:

Which one is not related to bioremediation:

Which of the following organism arrangements shows the correct order based on the energy transfer from the highest concentration to the lowest concentration? 

Which of the following is considered to have the highest net primary productivity? 

Which of the below options has a major impact on an ecosystem's frequency of chemical cycling?

The reduced form of nitrogen in the soil, known as _____, is transformed into its most oxidized form, _____, by the nitrifying bacteria present in the soil.

Which of the following is true about biological magnification? 

When fungicide is applied in a farm, the decomposition rate ________ and the net ecosystem production (NEP) _________. 

The Nubian Sandstone Aquifer System is considered the world's largest known fossil water aquifer system. The following can threaten the quantity of water in the aquifer system except:

Which of the following is incorrect about the primary productivity of the aquatic ecosystem?

The process by which ice or snow transforms into water vapor without passing through the liquid phase is referred to as _______ in the water cycle.

In which of the following cycles do respiration and photosynthesis play the most significant role?

All the biogeochemical cycles involve atmospheric components except

Which of the following processes is responsible for replenishing atmospheric nitrogen?