What event is thought to have contributed to the evolution of eukaryotes ?
Correct answer: D. Oxygenation of the atmosphere
- A. Global warming
- B. Glaciations
- C. Volcanic activity
- D. Oxygenation of the atmosphere
Explanation
The production and release of oxygen, by cyanobacteria and algae, lead to evolution of eukaryotic cells as they contain a membrane-bound nucleus and are the building blocks of complex multicellular organisms
This question appeared on the ETEA MDCAT 2017 paper, which you can sit online with every answer explained.
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Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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