BIOL 180 Exam Concepts | 100 Questions with 100% Correct Answers | Verified | Latest Update 2024

What is the most important difference between species richness and species diversity? - Species diversity takes species number AND relative frequency into account. What is the key difference between primary productivity and net primary productivity? - Net primary productivity represents just the energy used to build biomass. "Diversity leads to stability." This slogan claims that ecosystems with a large number of species present are more stable than ecosystems with a low number of species. Which of the following lines of evidence support this claim? - As the number of plant species increases, resistance and resilience increases What is biomass? - total organic matter, usually measured per plant or per square meter Why would a sampling effect lead to higher productivity in an experimental plot? - If a few highly productive species are present in a community, biomass production will be a function of whether or not they are present. What is a functional group? - Species that use resources or allocate resources in a similar way In biological communities, what is "resistance?" - degree of change during and after a disturbance