Unit 8: Ecology

Based on the data, approximately what percentage of the energy available at the producer level is transferred to primary consumers?

Which trophic level has the greatest total energy?

If a pesticide eliminated the secondary consumers from this ecosystem, the most likely short-term effect would be

What is the ratio of energy at the producer level to the tertiary consumer level? Express as a whole number.

In an ecosystem, which of the following organisms is a primary producer?

Which type of ecological relationship is illustrated when a clownfish lives among the tentacles of a sea anemone, benefiting from protection while the anemone benefits from food scraps?

Which biogeochemical cycle does NOT have a significant atmospheric component?

A graph of population growth shows rapid exponential growth followed by a leveling off as the population approaches a stable size. The stable population size that the environment can sustain is called the

Nitrogen fixation is the process by which

During primary succession, which organisms are typically the first to colonize bare rock?

Which of the following best describes density-dependent factors that limit population growth?

During which time period did the Paramecium population exhibit approximately exponential growth?

The leveling off of the population around day 14 is most likely caused by

If the researcher doubled the amount of bacterial food provided, the most likely effect would be

Based on the data, what is the approximate carrying capacity (K) of the Paramecium population in this flask? Express as a whole number.

In a keystone species removal experiment, removing a predatory sea star from a rocky intertidal community resulted in mussels dominating the habitat and reducing species diversity. This demonstrates that

An organism that breaks down dead organic matter and returns nutrients to the soil is classified as a

Which of the following describes an r-selected species?

Based on the data, which type of species interaction is occurring between Species X and Species Y?

The outcome observed when both species are cultured together is best explained by the