Exam 20: Ecosystem Energetic

Endotherms typically have a higher assimilation efficiency than ectotherms.

Energy is assimilated by plants through the process of

What are the two main food chains of ecosystems? Which is more dominant in terrestrial ecosystems and why?

In terrestrial ecosystems, most of the primary production goes into the grazing food chain.

The ________ law of thermodynamics states that when energy is transferred or transformed, part of the energy assumes a form that cannot pass on any further.

In terrestrial and shallow-water ecosystems, the grazing food chain is dominant over the detrital food chain.

When stomata are open, a plant is gaining CO₂ but losing water.

A(n)________ chemical reaction must absorb energy in order to proceed.

Within any ecosystem, there are two major food chains: the ________ food chain and the grazing food chain.

________ efficiency is the ratio of productivity in a given trophic level to the productivity of the trophic level on which it feeds.

Net primary productivity is greater in warm climates than in cold climates.

Net primary productivity refers to

Ecosystems have two major food chains

For photosynthesis and productivity to occur, a plant must open its ________ to take in carbon dioxide.

Production efficiency is the proportion of the energy ingested that is assimilated.

Primary productivity is greatest under

Explain why primary productivity is typically higher in coastal areas of the ocean than far from shore in the open ocean.

________ is the primary factor that limits productivity in aquatic ecosystems.

Allochthonous carbon input is most commonly found in ________ ecosystems.