» Waec 2017 Fishery Practical Answers – May/June Expo

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3aii)Basket fish trap
3b)
L- is a trap used for fishing. Fish traps can have the form of a fishing weir or a lobster trap. for example fyke nets.
In Other Words Bait is put at the taper end of L and then deep inside the water. The Bait attract the fish and when it enter the trigger is pulled down as the body of the fish touches it and this closes the mouth of L
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4a)
i)soyabean
ii)meat
iii)bone
iv)blood
v)Corn grain
4b)
i)Pelletized feeds are disease free
ii)Pelletized feeds ensure a balance diet
4c)
-Advantage-
i)Easy and to construct
ii)Easy to use in capturing fish
iii)Fish can easily be transferred
-Disadvantages-
i)It can injure the fish
ii) Unwanted fish are also captured
iii)It is cumbersome
4d)
i)Nets
ii)Traps
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1a)
C- measures the temperature of the water
D- measures the acidity or alkalinity of the water
1b)
C- 20 degree celsius
D- 7
1c)
specimen c is attached to a weighed rope. Lower the device until it is just of the bottom of the pond. Leave it suspended there for approximately, 5 minutes. Raise the device quickly through the water column, remove the specimen C and check the temperature immediately
1d)
i)water clarity
ii)Salinity
iii)Flow rate
1e)
i)ammonia alert guard.
ii)Photometer
iii)Monocular microscope kit
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2a)
G-smoking
H-sun drying
2b)
H- Remove scales, fins, innards etc. from the body of fish.
Then wash the body with clean water. After that cut the fish from their head to tail by knife. Cut in such way so that one part remain attached with another. Then keep the fish over a bed for drying in the sun.
2c)
i)Scales
ii)Fins
iii)Innards
2d)
i)To prolongs shelf life of the fish
ii)To enhance flavor and increases utilization in soups and sauces.
iii)To reduce waste at times of bumper catches and permits storage for the lean season.
2e)
G- is Vacuum-skin
H- is bamboo basket
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