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

question 6

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.

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Definitions:

Cancer

A disease characterized by the uncontrolled growth and spread of abnormal cells that can lead to death if not treated.

Type A Personality

A personality type characterized by competitiveness, urgency, aggressiveness, and a constant feeling of being under time pressure.

Antisocial Personality

A personality disorder characterized by a long term pattern of disregard for, or violation of, the rights of others.

Borderline Personality

A mental disorder characterized by unstable moods, behavior, and relationships.