IB Biology Exam Prep - Question List

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131.
The existence of which of the following situations in a natural population would violate the assumptions of a Hardy-Weinberg equilibrium condition?
  1. Variable environment conditions.
  2. Sexual selection.
  3. High level of phenotypic diversity.
  4. Large population size.
132.
A plant species that is widely distributed on a continent is separated into an eastern and a western population during an ice age. By the time the glaciers retreat, the two populations are morphologically distinct from each other. This is an example of the effect of:
  1. Character displacement.
  2. Punctuated equilibrium.
  3. Adaptive radiation.
  4. Geographical isolation.
133.
Shifting from the five-kingdom taxonomic scheme to the three-domain scheme by biologists included the:
  1. Splitting of the prokaryote kingdom into two prokaryote domains.
  2. Merging of the prokaryote kingdom with the protista into a domain.
  3. Separating of the autotroph kingdom into two different domains.
  4. Grouping of unicellular organisms in different kingdoms into one domain.
134.
The conclusion that fungi are more closely related to animals than to green plants is best supported by evidence based on analysis of:
  1. Modes of nutrition.
  2. Fossil records.
  3. Molecular systematics.
  4. Phenetic relationships.
135.
If it is to have taxonomic value, the number of spots on a beetle's wing covers must be:
  1. Adaptive.
  2. Unique to the species.
  3. Used in a dichotomous key.
  4. Heritable.

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