A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were

  • A able to carry out holozoic nutrition
  • B able to carry out photosynthesis using carbon dioxide in the pond water
  • C better adapted to life in darkness than to life in light
  • D not overcrowded

The correct answer is A. able to carry out holozoic nutrition

No explanation given
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