2020-NECO-FISHERY-PRACTICALS-ANSWERS
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Fishery-Practical!
(2a)
SPECIMEN E – Spade
SPECIMEN F – Wheel Barrow
SPECIMEN G – Head pan
SPECIMEN H – Axe
(2bi)
SPECIMEN E
(i) It is used to loosen ground
(ii) It is used for edging flower beds or lawns
SPECIMEN F
(i) It is used for disposing garden debris
(ii) it is used for moving compost manure
SPECIMEN G
(i) It is used for carrying farm products
(ii) It is used for carrying sand
SPECIMEN H
(i) It is used for cutting woods
(ii) It is used to harvest Timbers
(2bii)
(i) By Cleaning them
(ii) Sharpen the sloping cutting edge
(iii) Smearing the blade and wooden handles with a thin layer of cooked linseed oil
(iv) It should be kept dry after use
(2biii)
Shovel
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(3a)
SPECIMEN I: knife
SPECIMEN J: syringe and needle
SPECIMEN K: measuring cylinder
SPECIMEN L: slaked lime
(3aii)
USES OF (I)
-Cutting of offal/gut in fish processing
-For slaughtering fish
-Removal of gills from fish during processing
USES OF (J)
-For mass vaccination
USES OF (K)
-For measuring the quality of water in the pond.
(3aiii)
SPECIMEN J
-Water gloves and a lab coat
-Dispense of needles immediately upon removal
-Clean up blood spills properly
SPECIMEN K
-The measuring cylinder should be placed on a flat surface when reading the volume
-The volume of liquid should be read from the base of the meniscus
-Avoid parallax error
SPECIMEN L
-Use protective covering e.g Glove
-Wear eye protection and face cover
-Avoid inhalation
(3b)
Roles of L in fish farming
-To enhance the effect of fertilization
-Helps to prevent wider swing in PH
-Liming adds calcium and magnesium which are important in animal physiology
(3bii)
(i)They should be kept in appropriate containers as sterile products
(ii)Care should be taken prior to using them
(iii)The care provider should ensure the needles have not been blunted and that the packaging is not torn.
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(1a)
SPECIMEN A: Tilapia Aureus – (Tilapia fish)
SPECIMEN B: Late niloticus – (Nile perch)
SPECIMEN C: Bagrus docmac – (Silver fish)
SPECIMEN D; Citharinus Citharus – (Moon fish)
(1aiii)
-Similarities-
(i)the both posses sharp edges
(ii)the both posses Carassius auratus
(iii)the both posses
(iv)the both posses long feelers, and a bristly tail
-Difference-
Specimen C
(i) absent of superior mouth sharpsharp-edged
(ii)absent of fin
Specimen D
(i)Present of superior mouth sharpsharp-edged
(ii)present of fin