When some autotrophic Euglena are placed in the dark, they
A) stop producing their photosynthetic pigment.
B) produce an excess of photosynthetic pigment.
C) begin feeding on organic material floating in the surrounding water.
D) die.
E) Both a and c

Question

Quizplus · Accepted Answer

When autotrophic Euglena are placed in the dark, they stop producing their photosynthetic pigment (a) and begin feeding on organic material floating in the surrounding water (c). Therefore, both choices a and c are correct.

When Some Autotrophic Euglena Are Placed in the Dark, They