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Aquaculture Assessment Quiz

Total questions: 88

Worksheet time: 44mins

Name
Class
Date
1.

A rural fish farmer raises fish, vegetables, and chickens where wastes are recycled between components. What system is practiced?

a)

Monoculture

b)

Polyculture

c)

Integrated fish farming

d)

Intensive culture

2.

Stocking tilapia, carp, and mudfish that feed at different pond levels is an example of:

a)

Monoculture

b)

Polyculture

c)

Integrated farming

d)

Cage culture

3.

Which system maximizes nutrient recycling between crops, fish, and livestock?

a)

Extensive culture

b)

Integrated fish farming

c)

Raceway system

d)

RAS

4.

Sea turtle eggs normally hatch after about:

a)

30 days

b)

45 days

c)

60 days

d)

90 days

5.

Export of live mud crabs below 10 cm CL and 200 g is prohibited under:

a)

FAO 148

b)

FAO 155

c)

FAO 162

d)

FAO 189

6.

Which ingredient is a major protein source in aquafeeds?

a)

Rice bran

b)

Corn meal

c)

Cassava

d)

Fish meal

7.

Broodstock fed 5-10% biomass with natural diet to improve gonadal development are given:

a)

Lemna sp.

b)

Chlorella sp.

c)

Gracilariopsis heteroclada

d)

Thalassia hemprichii

8.

Correct oyster life cycle is:

a)

Egg-trochophore-veliger-spat-adult

b)

Egg-veliger-trochophore-spat-adult

c)

Egg-spat-veliger-adult

d)

Egg-trochophore-spat-adult

9.

The life cycle of blue swimming crab is:

a)

Egg-Zoea-Megalopa-Crab instar-Juvenile-Adult

b)

Egg-Nauplius-Zoea-Adult

c)

Egg-Zoea-Spat-Adult

d)

Egg-Megalopa-Zoea-Adult

10.

Which region consistently recorded the highest BSC production?

a)

Region III

b)

Region IV-B

c)

Region V

d)

Region VI

11.

Microalga fed during auricularia stage of Holothuria scabra is:

a)

Isochrysis galbana

b)

Tetraselmis suecica

c)

Chaetoceros calcitrans

d)

Skeletonema costatum

12.

Correct life cycle of sandfish is:

a)

Egg-gastrula-auricularia-doliolaria-pentactula-juvenile-adult

b)

Egg-auricularia-pentactula-adult

c)

Egg-doliolaria-auricularia-adult

d)

Egg-auricularia-juvenile-adult

13.

Best site for mangrove crab nursery is:

a)

Sandy freshwater pond

b)

Clay-loam brackishwater pond with road access

c)

Rocky upland pond

d)

Flood-prone pond

14.

Ideal soil for crab nursery ponds is:

a)

Sandy

b)

Gravelly

c)

Clay or clay-loam

d)

Silty sand

15.

Fish eating individuals of the same species is called:

a)

Predation

b)

Competition

c)

Cannibalism

d)

Aggression

16.

Tuna species mainly exported are:

a)

Yellowfin and skipjack

b)

Bigeye and bonito

c)

Bluefin and frigate tuna

d)

Albacore and bullet tuna

17.

LRFFT stands for:

a)

Live Reef Food Fish Trade

b)

Live Reef Fish Food Trade

c)

Live Reef Fisheries Trade

d)

Live Reef Fish Trading

18.

LRFFT demand mainly came from:

a)

Hongkong, Taiwan, China

b)

Japan, Korea, China

c)

Thailand, Vietnam, China

d)

Malaysia, Singapore, Indonesia

19.

Most abundant LRFFT species is:

a)

Epinephelus ongus

b)

Cromileptes altivelis

c)

Plectropomus leopardus

d)

Lutjanus sebae

20.

Guver hybrid is produced from:

a)

S. guttatus ♀ × S. vermiculatus ♂

b)

S. vermiculatus ♀ × S. guttatus ♂

c)

S. guttatus ♂ × S. vermiculatus ♀

d)

S. vermiculatus ♂ × S. guttatus ♀

21.

Vergu hybrid is produced from:

a)

S. guttatus ♀ × S. vermiculatus ♂

b)

S. vermiculatus ♀ × S. guttatus ♂

c)

S. guttatus ♂ × S. vermiculatus ♀

d)

S. vermiculatus ♂ × S. guttatus ♀

22.

Balancing carbon and nitrogen to improve water quality is:

a)

RAS

b)

IMTA

c)

Biofloc technology

d)

Green water system

23.

Which system uses microbial flocs as natural food?

a)

Cage culture

b)

Biofloc technology

c)

Pen culture

d)

Raceway

24.

Culture system relying mainly on natural productivity is:

a)

Intensive

b)

Semi-intensive

c)

Extensive

d)

Super-intensive

25.

Which practice reduces feed cost by natural fertilization?

a)

Integrated fish farming

b)

Monoculture

c)

Hatchery system

d)

RAS

26.

Which practice best minimizes cannibalism in cultured catfish?

a)

Overstocking

b)

Adequate feeding and size grading

c)

Increasing salinity

d)

Reducing water exchange

27.

Which condition usually aggravates cannibalism in fish ponds?

a)

Adequate feeding

b)

Low stocking density

c)

Overcrowding

d)

Proper size grading

28.

Which tuna species is scientifically named Thunnus albacares?

a)

Skipjack

b)

Yellowfin tuna

c)

Bigeye tuna

d)

Albacore

29.

Skipjack tuna is scientifically known as:

a)

Auxis thazard

b)

Katsuwonus pelamis

c)

Euthynnus affinis

d)

Thunnus obesus

30.

Which practice is MOST important in selecting a site for crab nursery ponds?

a)

Distance from shoreline

b)

Soil permeability

c)

Availability of clean brackishwater

d)

Pond size

31.

Clay-loam soils are preferred in ponds because they:

a)

Drain water easily

b)

Prevent seepage

c)

Increase salinity

d)

Improve aeration

32.

Which larval stage of sea cucumber comes immediately after gastrula?

a)

Doliolaria

b)

Auricularia

c)

Pentactula

d)

Juvenile

33.

During which larval stage does sandfish start to settle on substrates?

a)

Auricularia

b)

Gastrula

c)

Doliolaria

d)

Pentactula

34.

Which microalgae is rich in DHA and commonly used for marine larvae?

a)

Chlorella sp.

b)

Isochrysis galbana

c)

Lemna sp.

d)

Gracilaria sp.

35.

Which condition favors successful oyster spat settlement?

a)

High turbidity

b)

Presence of suitable substrate

c)

Strong wave action

d)

Freshwater influx

36.

What stage of oyster is suitable for transfer to grow-out areas?

a)

Veliger

b)

Trochophore

c)

Spat

d)

Egg

37.

Which BSC larval stage resembles a small crab?

a)

Zoea

b)

Nauplius

c)

Megalopa

d)

Spat

38.

Which practice improves survival of crab larvae in hatcheries?

a)

Overfeeding

b)

Poor water exchange

c)

Regular siphoning of wastes

d)

High stocking density

39.

Which region is known as a major producer of blue swimming crab?

a)

CAR

b)

NCR

c)

Western Visayas

d)

Cordillera

40.

Which species is known as humpback grouper?

a)

Epinephelus ongus

b)

Cromileptes altivelis

c)

Lutjanus sebae

d)

Plectropomus leopardus

41.

Which LRFFT species commands the highest market price?

a)

Leopard coralgrouper

b)

White-streaked grouper

c)

Red emperor

d)

Humpback grouper

42.

Which practice supports sustainability of LRFFT?

a)

Catching juveniles

b)

Size-selective harvesting

c)

Cyanide fishing

d)

Overfishing reefs

43.

Which culture technique relies on microbial protein as feed?

a)

Cage culture

b)

Biofloc system

c)

Extensive pond culture

d)

Pen culture

44.

Adding a carbon source in biofloc systems aims to:

a)

Increase oxygen

b)

Promote heterotrophic bacteria

c)

Reduce sal

45.

Which aquaculture system has the lowest external feed input?

a)

Intensive

b)

Semi-intensive

c)

Extensive

d)

Super-intensive

46.

Integrated fish farming is MOST beneficial because it:

a)

Requires expensive feeds

b)

Maximizes resource utilization

c)

Increases pollution

d)

Reduces species diversity

47.

Which waste product from poultry is used to fertilize fish ponds?

a)

Feathers

b)

Blood

c)

Manure

d)

Bones

48.

Pond silt from integrated farms is commonly used as:

a)

Fish feed

b)

Fertilizer for crops

c)

Lime substitute

d)

Pesticide

49.

Which factor MOST affects pond productivity?

a)

Pond color

b)

Nutrient availability

c)

Pond shape

d)

Fence height

50.

Which larval stage of crab is planktonic?

a)

Juvenile

b)

Adult

c)

Zoea

d)

Crab instar

51.

Which hatchery practice reduces ammonia buildup?

a)

Overfeeding

b)

Regular water exchange

c)

High stocking density

d)

Reduced aeration

52.

Which algae group is best for early marine larvae feeding?

a)

Macroalgae

b)

Diatoms and flagellates

c)

Blue-green algae

d)

Seaweeds

53.

Which species is commonly used in siganid hybridization studies?

a)

Siganus guttatus

b)

Chanos chanos

c)

Lates calcarifer

d)

Oreochromis niloticus

54.

The main goal of siganid hybridization is to:

a)

Increase cannibalism

b)

Improve hatchery performance

c)

Reduce growth rate

d)

Eliminate feeding

55.

Which fishery activity is regulated to protect crab stocks?

a)

Export of undersized crabs

b)

Feeding practices

c)

Pond fertilization

d)

Water exchange

56.

Which government order sets size limits for mud crabs?

a)

FAO 148

b)

FAO 155

c)

FAO 162

d)

FAO 189

57.

Which practice ensures better oyster growth?

a)

Clean water flow

b)

High turbidity

c)

Freshwater culture

d)

Overcrowding

58.

Which aquaculture species undergoes trochophore and veliger stages?

a)

Crab

b)

Oyster

c)

Tuna

d)

Tilapia

59.

Which larval stage of oyster actively swims using cilia?

a)

Spat

b)

Veliger

c)

Adult

d)

Juvenile

60.

Which practice helps control disease outbreaks in hatcheries?

a)

Biosecurity and sanitation

b)

Overstocking

c)

Poor water quality

d)

Infrequent cleaning

61.

Which nutrient is MOST responsible for phytoplankton growth?

a)

Carbon

b)

Nitrogen and phosphorus

c)

Calcium

d)

Sodium

62.

Which system is environmentally friendly by recycling wastes internally?

a)

Cage culture

b)

Biofloc technology

c)

Monoculture

d)

Open-sea fishing

63.

Which aquaculture practice reduces environmental discharge?

a)

Extensive farming

b)

Biofloc system

c)

Open pond system

d)

Capture fisheries

64.

Which factor MOST affects larval survival?

a)

Color of tank

b)

Water quality

c)

Tank size

d)

Labeling

65.

Which practice improves feed conversion ratio?

a)

Proper feeding management

b)

Overstocking

c)

Irregular feeding

d)

Poor-quality feeds

66.

Which system requires continuous aeration?

a)

Extensive

b)

Semi-intensive

c)

Biofloc

d)

Traditional pond

67.

Which species is a benthic feeder in polyculture?

a)

Tilapia

b)

Carp

c)

Mudfish

d)

Milkfish

68.

Which species feeds near the surface in polyculture ponds?

a)

Mudfish

b)

Common carp

c)

Tilapia

d)

Catfish

69.

Which activity contributes MOST to sustainable aquaculture?

a)

Resource recycling

b)

Overstocking

c)

Overfeeding

d)

Habitat destruction

70.

Which larval stage is non-feeding in sea cucumber?

a)

Auricularia

b)

Gastrula

c)

Pentactula

d)

Juvenile

71.

Which practice improves settlement of sandfish juveniles?

a)

Clean sand substrate

b)

High stocking density

c)

Strong water current

d)

Frequent disturbance

72.

Which parameter should be monitored daily in hatcheries?

a)

Fence height

b)

Dissolved oxygen

c)

Pond size

d)

Tank color

73.

Which aquaculture law focuses on resource conservation?

a)

FAO on export promotion

b)

Fisheries Administrative Orders

c)

Feed regulations

d)

Hatchery manuals

74.

Which practice prevents fish stress?

a)

Stable water quality

b)

Overcrowding

c)

Sudden water changes

d)

Noise disturbance

75.

Which natural food supports early fish larvae?

a)

Zooplankton

b)

Rice bran

c)

Pellets

d)

Cassava

76.

Which system integrates different trophic levels?

a)

Monoculture

b)

IMTA

c)

Cage culture

d)

Capture fishery

77.

Which aquaculture practice reduces dependence on fish meal?

a)

Biofloc technology

b)

Monoculture

c)

Overfeeding

d)

Capture fisheries

78.

Which factor MOST influences site accessibility?

a)

Road access

b)

Soil color

c)

Pond depth

d)

Salinity

79.

Which practice ensures market compliance for LRFFT?

a)

Harvesting undersized fish

b)

Observing size limits

c)

Cyanide fishing

d)

Illegal transport

80.

Which organism converts wastes into microbial biomass in biofloc?

a)

Algae

b)

Heterotrophic bacteria

c)

Fish

d)

Zooplankton

81.

Which species benefits MOST from biofloc systems?

a)

Shrimp

b)

Sea turtles

c)

Tuna

d)

Grouper

82.

Which system minimizes water exchange?

a)

Extensive pond

b)

Biofloc

c)

Cage culture

d)

Open raceway

83.

Which culture practice supports food security?

a)

Sustainable aquaculture

b)

Overexploitation

c)

Habitat destruction

d)

Illegal fishing

84.

Which practice ensures long-term pond productivity?

a)

Soil management

b)

Ignoring pond bottom

c)

Continuous overfeeding

d)

No drying

85.

Which larval food is microscopic?

a)

Pellets

b)

Microalgae

c)

Rice bran

d)

Seaweed

86.

Which species undergoes metamorphosis from larva to benthic juvenile?

a)

Sea cucumber

b)

Tilapia

c)

Milkfish

d)

Catfish

87.

Which aquaculture approach reduces environmental impact?

a)

Integrated systems

b)

Overfishing

c)

Monoculture only

d)

Habitat conversion

88.

Which principle underlies sustainable aquaculture development?

a)

Maximum exploitation

b)

Resource conservation and efficiency

c)

Short-term profit

d)

High waste discharge

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