Unit 9 Test Review - Aquatic Structures & Equipment

Match the type of aquaculture system with the description.

• extensive system

• Limited input, no environmental control, open water system, lower stocking density

• intensive system

• medium stocking density, limited environmental control, natural food sources supplemented for faster growth

• semi-intensive system

• high stocking density, complete control over environment, only formulated food provided

Tags

NGSS.HS-LS2-7

Which type of aquaculture system requires the least amount of input from the farmer?

• extensive

• intensive

• semi-intensive

• raceway

Which type of aquaculture system allow for the highest stocking density of fish?

• extensive

• intensive

• semi-intensive

• raceway

Tags

NGSS.MS-ETS1-2

Match the description to the type of aquaculture pond.

• excavated pond

• created by building a dam across a river

• levee pond

• pushing up mud banks on flat land to create a pond and filling with water

• natural pond

• created by digging a pit in the ground and filling with water

• impoundment pond

• groundwater or runoff from springs, no construction needed

​​ (a)   is the most common type of pond in the United States for aquaculture farming.

• Levee pond
• Natural pond
• Excavated pond
• Raceway

Creating an artificial channel with a high rate of water flow in a contained area is called a _____.

• raceway

• levee pond

• semi-intensive system

• well

The flow index for a raceway can be calculated with the following formula:

Aeration and surface agitation are important for increasing ​ (a)   and decreasing ​ (b)   .

• dissolved oxygen concentration
• stratification of water
• turbidity
• circulation

Which of the following is NOT an advantage of using fish cages and net pens in aquaculture systems?

• low initial cost

• harvest is simple

• multiple uses for ponds

• low dissolved oxygen concentration

Which of the following is NOT an disadvantage of using fish cages and net pens in aquaculture systems?

• multiple uses of pond space

• high disease rates

• supplemental feed required

• low dissolved oxygen concentration

Tags

NGSS.MS-LS2-5