Practice Quiz

IB Biology Exam Prep - Question List

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136.
In biological classification, which of the following taxonomic groups includes all the others?
  1. Family.
  2. Genus.
  3. Order.
  4. Phylum.
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137.
Which of the following is an example of a mutualistic relationship between two organisms?
  1. Hawks hunting mice during the day and owls hunting mice at night.
  2. Ants obtaining food from aphids and protecting them from predators.
  3. Ticks feeding on a moose's blood and dispersing at the same time.
  4. Bees feeding on thistle nectar and siskins feeding on thistle seeds.
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138.
Thermoclines are related to which of the following characteristics of ecosystems?
  1. The ecotones that exist between grasslands and forests.
  2. The inverse correlation of temperature and elevation.
  3. The zonation of organisms in intertidal habitats.
  4. The vertical stratification of freshwater lakes.
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139.
Which of the following conditions is a particular problem for organisms living in estuaries?
  1. Availability of light.
  2. Leaching of nutrients.
  3. Erosion of substrate.
  4. Variation in salinity.
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140.
Which of the following pairs of environmental factors together represents the primary determinant of the distribution of terrestrial biomes worldwide?
  1. Mean temperature and precipitation.
  2. Elevation and mean precipitation.
  3. Mean temperature and soil type.
  4. Elevation and soil type
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