 |
1 | |
About 75 percent of the world's surface is covered by water and humans harvest about what percent of their food supply from fresh and saltwater sources? |
|
| | A) | 1% |
| | B) | 10% |
| | C) | 25% |
| | D) | 50% |
|
2 | |
"Mariculture" refers to what form of aquaculture? |
|
| | A) | fresh water, stream-based |
| | B) | fresh water, pond-based |
| | C) | fresh water, open lake-based |
| | D) | saltwater |
|
3 | |
"Benthic" feeders refer to what type of fish? |
|
| | A) | bottom feeders |
| | B) | cold water feeders |
| | C) | zooplankton feeders |
| | D) | phytoplankton feeders |
| | E) | surface feeders |
|
4 | |
What species is the major product of U.S. aquaculture? |
|
| | A) | salmon |
| | B) | crayfish |
| | C) | clams |
| | D) | catfish |
| | E) | trout |
|
5 | |
What region of the US has the greatest aquaculture production? |
|
| | A) | Northeast |
| | B) | Southern |
| | C) | Midwestern |
| | D) | Northwestern |
| | E) | Southwestern |
|
6 | |
Two of the most important water quality measures in aquaculture are oxygen content and what other dissolved compound? |
|
| | A) | calcium |
| | B) | ammonia |
| | C) | iron |
| | D) | copper |
|
7 | |
Raising more than one species in an aquaculture environment is given what formal term? |
|
| | A) | polyculture |
| | B) | multiculture |
| | C) | cross-fostering |
| | D) | multi-layering |
| | E) | biodiversification |
|
8 | |
What is the most common method of raising fish for meat in the U.S.? |
|
| | A) | flow-through raceways |
| | B) | cages |
| | C) | closed recirculation tanks |
| | D) | net pens |
| | E) | ponds |
|
9 | |
Well managed ponds can produce how many pounds of catfish per acre per year? |
|
| | A) | 400-500 |
| | B) | 4,000-5,000 |
| | C) | 40,000-50,000 |
|
10 | |
Catfish females are used as "broodfish" beginning at about what age? |
|
| | A) | 6 months |
| | B) | 2 years |
| | C) | 4 years |
|
11 | |
What species has been raised in U.S. aquaculture systems for the longest time? |
|
| | A) | salmon |
| | B) | trout |
| | C) | walleye |
| | D) | bass |
| | E) | catfish |
|
12 | |
How long does it take typically to produce a marketable trout from aquaculture? |
|
| | A) | 3 months |
| | B) | 6 months |
| | C) | 1 year |
| | D) | 2 years |
|
13 | |
The very small eyes of the catfish, relative to bluegills, indicate that they find their food predominantly by methods other than sight. |
|
| | A) | TRUE |
| | B) | FALSE |
|
14 | |
Catfish have taste buds all over their bodies. |
|
| | A) | TRUE |
| | B) | FALSE |
|
15 | |
It is against the law to release the African Tilapia fish species into natural streams or ponds in the northern U.S., but legal in most states bordering the Gulf of Mexico. |
|
| | A) | TRUE |
| | B) | FALSE |
|
16 | |
Unlike most mammals that primarily digest food in the small intestine, fish primarily digest food in the stomach. |
|
| | A) | TRUE |
| | B) | FALSE |
|
17 | |
Some carnivorous species of aquaculture produced fish require up to 50 percent of their diet to be from recycled fish meal. |
|
| | A) | TRUE |
| | B) | FALSE |
|
18 | |
Aquaculture was recorded as a fish production method in China over 4000 years ago. |
|
| | A) | TRUE |
| | B) | FALSE |
|
19 | |
Aquaculture production dominates total world fish consumption (as compared to ocean and fresh water catch). |
|
| | A) | TRUE |
| | B) | FALSE |
|
20 | |
Aquaculture production in the U.S. more than doubled between 1990 and 2002. |
|
| | A) | TRUE |
| | B) | FALSE |
2003 McGraw-Hill Higher Education