SAT Practice346facbf-2c87-4295-94bd-099a869cb95a

Practice one SAT question at a time

Questions come from the Bluebook question bank. Made by Iskaa303 (Iskander Madikhan).

6050403020100Percentage of contributionvariable selectionhomogeneous selectiondispersal limitationhomogenizing dispersalnondominant processRelative Contributions of Processes to Prokaryotic and Fungal Community Assembly in Qinghai-Tibetan Lakes fungal community prokaryotic community
  • For each data category, the following bars are shown:
    • fungal community
    • prokaryotic community
  • The Percentage of contribution data for the 5 categories are as follows:
    • variable selection:
      • fungal community: 38.3 percent
      • prokaryotic community: 57.9 percent 
    • homogeneous selection: 
      • fungal community: 1.5 percent
      • prokaryotic community: 0.0 percent 
    • dispersal limitation: 
      • fungal community: 2.5 percent
      • prokaryotic community: 0.0 percent 
    • homogenizing dispersal: 
      • fungal community: 13.7 percent
      • prokaryotic community: 37.3 percent
    • nondominant process: 
      • fungal community: 43.7 percent
      • prokaryotic community: 3.5 percent

In a 2020 study, Jian Yang et al. examined prokaryotic and fungal microbial communities in Qinghai-Tibetan Plateau lake sediment to understand the relative contributions of various factors to community assembly, or formation. They quantified the contributions of environmental pressures (variable and homogeneous selection), dispersal limitation, homogenizing dispersal, and nondominant processes. Tolerance of environmental pressures is known to be higher in fungi than in prokaryotes, which the researchers hypothesize accounts for the finding that blank

Which choice most effectively uses data from the graph to complete the statement?