May 8, 2015
[FFA AQUACULTURE CDE]
Practicum Questions
Fish Anatomy & Physiology
QUESTIONS 1 – 10: Using the labeled fish, identify the following organs:
1. Liver
2. Gill
3. Gonad
4. Heart
5. Intestine
6. This tissue is responsible for most of the excretion of nitrogenous wastes.
7. The size of this organ may indicate the natural diet of the fish species.
8. This organ synthesizes and stores absorbed nutrients, produces bile, and removes some waste
products from blood.
9. Which of the labeled organs is located most anteriorly?
10. This organ is responsible for reproduction.
May 8, 2015
[FFA AQUACULTURE CDE]
Practicum Questions
System Design & Troubleshooting
QUESTIONS 1 – 2: Using the labeled components outside of the hatchery (metal) building,
select the BEST answer:
1. What is the purpose of the component labeled “A”?
a. Remove carbon dioxide, nitrogen, and hydrogen sulfide
b. Remove carbon dioxide, nitrogen, and oxygen
c. Remove carbon dioxide, nitrogen, and hydrogen sulfide and add oxygen
d. Remove carbon dioxide and add oxygen
e. Add oxygen and remove ammonia
2. Which of the following increases the effectiveness of the component labeled “A”?
a. Introduction of counter current air flow
b. Channelization
c. Biofilms on the unit media
d. Small, tightly packed media
e. High flow rate
QUESTIONS 3 – 8: Using the labeled recirculating system in the greenhouse, identify the
following components:
3. This component’s primary purpose is to remove solid wastes from the system.
4. This component’s primary purpose is to break down nitrogenous wastes in the system.
5. This component’s primary purpose is to remove unwanted chemical toxins.
6. This component’s primary purpose is to help kill some of the micro-organisms that pass
through it.
7. This component’s primary purpose is to add oxygen and remove carbon dioxide from
the system.
May 8, 2015
[FFA AQUACULTURE CDE]
8. Which of the following decreases the effectiveness of the component labeled “C”?
a. Increased suspended solids
b. Fouling of bulb and quartz sleeve
c. High flow rate
d. Extending bulb usage
e. All of the above
QUESTIONS 9 – 10:
9. Which of the following are consumed during nitrification?
a. Nitrogen gas and oxygen
b. Carbon dioxide and oxygen
c. Nitrogen gas and alkalinity
d. pH and alkalinity
e. Oxygen and alkalinity
10. When testing the total ammonia nitrogen in your recirculating system, you get a
reading of 1.0 ppm. Which management change should you consider making to lower
the level?
a. Increase aeration
b. Reduce feeding rate
c. Add air stripping column
d. Add 5 to 6 ppm chloride
e. Add baking soda