A Biologist Was Asked to Identify a Unicellular Organism Collected

A biologist was asked to identify a unicellular organism collected from shallow marine waters. The organism secreted a multichambered porous test and extending through the pores were slender, brownish-coloured pseudopodia forming a protoplasmic net. Experiments showed that the growth of the test was greatest in the presence of light. Based on this information, the biologist concluded that the organism was a

A) diatom.
B) actinopod.
C) foram.
D) cercozoa.
E) dinoflagellate.

Correct Answer:

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