You Are Studying a Mini-Ecosystem That You Created from Samples

Multiple Choice

You are studying a mini-ecosystem that you created from samples of lake water, plants, and sediment. Your teacher tells you to drop about 10 sesame seeds on the top of the water because they will attract some interesting organisms. One week later, you see that the seeds are surrounded by white fuzz that is extending off of the seeds, and you conclude that the decomposing seeds have been colonized by

A) diatoms.
B) brown algae.
C) unikonts.
D) water molds.