1. Which of the following is resposbile for red tides? A. Diatom B. Dinoflagella

Question

1. Which of the following is resposbile for red tides?

A. Diatom

B. Dinoflagellata

C. Rhodophyta

D. Phaeophyta

2. To which kindom or domain does the organism causing red tides belong?

A. Fungi

B. Eubacteria

C. Protists

D. Archaebacteria

3. For a population to expand quickly and sustain itself over time requires which of these three factors:

I. The presence of Karenia brevis in the water column

II.A major nutrient source for organism

III. Wind and/or water current movement that condenses the K. brevis population into an increasingly denser cluster

A. I

B. II

C. III

D. All of the above

4. Why would dinoflagellata be classified as eukaryote and not prokaryote?

A.Because it has flagella

B. Because it has membrane bound organelles (ex. chloroplasts)

C. Because it has circular DNA

D. All of the above

5. Which of the following are classified in the same Domain as our red tide causing organism?

A.Protozoans

B. Fungi

C. Seaweed

D. cyanobacteria

6. In the next module you will be looking at Zooxanthellae, they have a flagella, plasma membrane, unbound nucleoid and circular DNA. What would you classify Zooxanthellae as?

A. Eukaryote

B. Prokaryote

C. Archaebacteria

D. Bacteria

Explanation / Answer

1. Dinoflagellata

2. Protists

3. All the above

4. All the above

5. Protozoans

6. Eukaryote

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