AQUACULTURE REVIEWER (MULTIPLE CHOICE WITH ANSWER)

AQUACULTURE REVIEWER (MULTIPLE CHOICE WITH ANSWER)

1. The scientific name of Nile tilapia is:

a) Tilapia niloticus                     c) Oreochromis nilotica

b) Oreochromis niloticus             d) Tilapia hornorum

2. The scientific name of milkfish is:

a) Ephinephelus coioides             c) Chanos chanos

b) Oreochromis niloticus             d) Cyprinus carpio

3. The scientific name of the giant tiger prawn is:

a) Penaeus vannamei                     c) Penaeus indicus

b) Macrobrachium rosenbergii         d) Penaeus monodon

4. A seaweed that is mainly produced in the country is:

a) Kappaphycus c) Nori

b) Kelp d) Aristichthys

5. The most dominant species cultured in brackishwater in the country are:

a) Oyster and mussels                 c) Mudcrab and grouper

b) Milkfish and shrimp         d) Tilapia and milkfish

6. Which of the following is not a major aquaculture species in the Philippines?

a) Carp             c) Seaweeds

b) Salmon             d) Tiger prawn

7. This shrimp or prawn undergoes 11 larval stages to metamorphose to post larvae:

a) Giant tiger prawn     c) Giant freshwater prawn

b) Whiteleg shrimp     d) Indian shrimp

8. Penaeid shrimps undergo these larval stages in sequence before they become post larvae:

a) Nauplius, megalopa, instar     c) Nauplius, mysis, zoea,

b) Nauplius, zoea, mysis             d) Zoea, megalopa, instar

9. The Philippines ranks as the world’s second largest producer of:

a) Shrimp             c) Sea cucumber

b) Milkfish             d) Seaweeds

10. Water like in estuarine areas with intermediate salinity due to the mixing of fresh and sea water is referred to as:

a) Freshwater             c) Brackishwater

b) Seawater                     d) Marine water

11. Breeding and growout production of commercially important marine species are grown in zonified marine cages which the Bureau of Fisheries and Aquatic Resources refers to as:

a) Industrial cage parks             c) Ocean cage parks

b) Seawater cage farms             d) Mariculture parks

12. Eye ablation is a way of inducing females to spawn in:

a) Milkfish             c) Oysters

b) Mussels             d) Shrimp

13. This form of nitrogen in water is considered toxic to fish:

a) Nitrogen gas                     c) Nitrate

b) Ionized ammonia             d) Unionized ammonia

14. Waste excretion rates vary with fish size or weight but remain fairly constant per:

a) kg fish             c) m3 of water

b) kg feed             d) number of fish

 

15. The term that refers to facilities or procedures involved in producing fish or shrimp fry is:

a) Broodstock conditioning             c) Nursery

b) Hatchery                                             d) Growout

16. According to the Philippine Agricultural Engineering Act of 1998, this involves the design, construction, installation, operation, maintenance and management of machinery, equipment and facilities for fishery and aquaculture production, processing, transporting and marketing:

a) Aquaculture                         c) Fishery and aquaculture resource engineering

b) Aquaculture engineering d) Fishery engineering

17. Hill ponds that rely on rainfall and runoff as water source are also called:

a) Excavated ponds             c) Levee ponds

b) Watershed ponds             d) Embankment ponds

18. For the same pond area, the levee requirement is shortest for:

a) Square ponds                         c) Octagonal ponds

b) Rectangular ponds                 d) Circular ponds

19. The height of the levee from the water surface to the top of the levee is called:

a) Dike height                         c) Side slope

b) Freeboard                         d) Fetch

20. A pond bottom slope of 2000:1 is equivalent to:

a) 0.05 % slope                     c) 1.0 % slope

b) 0.5 % slope                     d) 5 % slope

21. This is provided in a pipe drain to prevent seepage:

a) Core trench                     c) Collar

b) Freeboard                     d) Frame

22. These two culture systems in open water are considered as enclosure culture systems:

a) Raceways and ponds c) Ponds and cages

b) Pens and cages         d) Raceways and pens

23. This type of aerator may be excellent in emergencies because it quickly raises the oxygen level in a small area, but is not good in dispersing oxygen throughout the pond:

a) Diffused bubble aerator                 c) Vertical pump aerator

b) Paddle-wheel aerator                 d) Aspirating aerator

24. These aerators are excellent choices for medium and large ponds where movement of oxygenated water away from the aerator is important:

a) Diffused bubble and aspirating aerators     c) Vertical pump and bubble aerators

b) Paddle-wheel and aspirating aerators     d) None of the above

25. Without additional aeration, a continuous supply of 70 gpm good quality water can at the most support approximately:

a) 265 kg fish                 c) 300 kg fish

b) 365 kg fish                 d) 400 kg fish

26. In recirculating systems, the conversion of toxic ammonia and intermediate form nitrite to relatively harmless nitrate is called:

a) Fractionation                 c) Nitrification

b) Ozonation                 d) Denitrification

27. Normal acclimation of biofilters would take about:

a) 1 week                 c) 3 weeks

b) 2 weeks                 d) 4 weeks

ANSWER KEY:

 

1. B	10. C	19. B
2. C	11. D	20. A
3. D	12. D	21. C
4. A	13. D	22. B
5. B	14. B	23. C
6. B	15. B	24. B
7. C	16. C	25. A
8. B	17. B	26. C
9. D	18. D	27. D