Exam 31: Ecosystems

Match each description with the appropriate scientific term. -ratio of net productivity at one trophic level to the productivity at the trophic level below it

Where do plants obtain the necessary carbon for photosynthesis?

Which of following marine ecosystems have the highest mean net primary productivity?

Match each description with the appropriate scientific term. -relationship between a predator and prey that affects populations in two or more trophic levels

Match the term that corresponds to the appropriate lettered box in the image. -detritivores and decomposers

Nearly all ecosystems receive a constant input of energy from which outside source?

Match the term that corresponds to the appropriate lettered box in the image. -secondary consumers

Energy is conserved between each trophic level.

Match the term that corresponds to the appropriate lettered box in the image. -terrestrial food webs

Water can be a limiting factor when measuring productivity.

Match the term that corresponds to the appropriate lettered box in the image. -primary consumers

How would it change the ecological efficiency if all humans became vegetarians?

What is the overall ecological efficiency of most organisms?

Which two types of organisms make up the detrital food web?

What is the shape of the trophic pyramids, typically?

Match each description with the appropriate scientific term. -total dry weight of plants at a certain time

Match the term that corresponds to the appropriate lettered box in the image. -terrestrial rocks

In a marine environment, what governs the rate of primary productivity?

The most biomass in trees is leaves, which undergo photosynthesis.

Which ecosystems are the most rapidly growing habitats on the planet?