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
Correct Answer: Option A
Explanation
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