Question 15
(Multiple Choice)
Refer to the figure.
An unknown diatom is collected from a sample of sea water. The researcher is asked to grow the diatom in the laboratory and identify it based on the culture's density and silica level. At day 10, 20, and 30, the diatom density is almost 104 and silica levels are almost zero. Which species has the researcher cultured?
A) Synedra
B) Asterionella
C) Synedra with an unknown
D) Neither Synedra nor Asterionella.
Answer