2017 WAEC FISHERY QUESTIONS AND ANSWERS

FISHERY QUESTIONS

FISHERY OBJECTIVE AND ESSAY ANSWERS

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FISHERY OBJ

1-10 ADDBACBADA
11-20 BDACBADDAC
21-31 ADDAA


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THEORY

1a)
i)Fishing Boat Captain
ii)Fishermen
iii)Seafood Processing Jobs
iv)Fish and Seafood Brokers

1b)
i) Dumping of rubbish into fish ponds

ii)The use of artificial fertilisers: Ponds can be polluted if powdery chemical fertilizers containing nitrates are put on the crops near Fish ponds and then the powdery chemical fertilizers containing nitrates are washed into the fish ponds by rain

1c i)

Cast net : A cast net , also called a throw net , is a net used for
fishing . It is a circular net with small weights distributed around its edge.

The net is cast or thrown by hand in such a manner that it spreads out on the water and sinks. This
technique is called net casting or net throwing. Fish are caught as the net is hauled back in. This simple device is particularly effective for catching small bait or forage fish

1cii)

Hook and line: Hooks and lines are gear where the fish is attracted by a natural or artificial bait (lures) placed on a hook fixed to the end of a line or snood, on which they get caught.

2a)
i)do not transport brood stock in bad water
ii)do not rough handle brood sock
iii)disinfect brood stock before allowing them into your hatchery,or brood stock pond
iv)do not transport brood stock in a crowded condition

2b)
i)digging out pit
ii)constructing manual barriers
iii)disinfecting the water
iv)getting water supply
v)cult
vi)trenching the pond

2ci)
high temperature increases the hotnesss of water and reduce water oxygen

2cii)
high turbidity reduces the intensity of light
Getting into the fish pond

2ciii)
low dissolve oxygen causes many difects in fish which include asphyxiation,low food intake

2d)
i)use of hook and line
ii)use of scoop net


3a)
i)Agricultural limestone

ii)Basic slag

iii)Laked lime

iv) Quick lime

v) Liquid lime

3bi)FISHING GEAR:
Fishing gear is the equipment used by fishermen when fishing. Almost any equipment or gear used for fishing can be called fishing tackle. Some examples are hooks, lines, sinkers, floats, rods, reels, baits, lures, spears, nets, gaffs, traps, waders and tackle boxes.

3bii)FISHING CRAFT;
Fishing crafts are most essential for catching the fish in large scale in water bodies ... a kind of floating raft, such as the ones used along the east coast of India

4a)
Aquaculture refers to the
breeding, rearing, and harvesting of
plants and animals in all types of water
environments including ponds, rivers,
lakes, and the ocean.

5a)
Cannibalism in fish is the act or practices aming fishes eating the fish or internal organs of other fishes

5aii)
i)by sorting
ii)proper stocking of fishies to avoid overcerian

5b)
i)reducing fish losses through cannibalism;
ii)improving supplementary feeding efficiency through adequate food ration;
iii)increasing the accuracy of stock estimates for monitoring

5c)
i)ocean
ii)river
iii)streams
iv)dams

5di)
Latency period is the period between the exposure and infection of disease

5dii)
gravid fish are female fishes producing eggsv)boreholes


6ci) Stocking in Fish farming is the raising of fish in a hatchery and releasing them into a river, lake, or the ocean to supplement existing populations, or to create a population where none exists.



6cii)
The process of stocking
starts with the collection of fingerlings from the hatchery, transporting
them to the farm and, finally, putting them into the pond.