2021 WAEC MAY/JUNE FISHERIES ALT B Questions & Answers: 2020 WAEC MAY/JUNE FISHERIES ALT B ANSWERS Night before Exam

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FISHERIES OBJ
1-10: CCBADDDACA
11-20: ACBACDDAAC
21-30: BBACADDACA
31-40: AADBDDADDC

 

==COMPLETED==



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(1ai)
Fish processing involves converting fishes material into final fish products while fish preservation involves preserving processed or unprocessed fish or fish product for future use by means of controlling the environment or any other measures to prolong the shelf life of fish.

(1aii)
(i) Scaling: Steps involved are denaturation and loosening of the mucous layer and outer protein structures of the skin, followed by enzymatic degradation of the outer skin structures, and finally washing off the scales with water jets. In the process, the fish is incubated in a specially designed incubation tank filled with a slightly acidified water solution of the descaling enzyme, a collagenase.

(ii) Gutting: This begins with careful descaling from the tail to the head; then cutting it with a knife from a small hole in the stomach along the entire body length to the head, remove the gills and use them to remove the gut. Carefully cut out the swamp of blood along the central bone.

(iii) Filleting: This is done by cutting or slicing away the flesh of a fish from the bone by cutting lengthwise along one side of the fish parallel to the backbone.

(1b)
(i) It is the most common and cheapest animal protein source to mankind especially among the poor dwellers in Nigeria
(ii) Fish is an important source of food
(iii) Fisheries is a source of income
(iv) Fisheries provide employment

(1bii)
(i) storage
(ii) sorting
(iii) packaging

(1ci)
(i) Water Quality
(ii) Land topography
(iii) Temperature

(1cii)
(i) It affects the growth rate of fishes
(ii) High mineral turbidity can affect fish directly by injuring their breathing organs

 


2021 WAEC MAY/JUNE FISHERIES ALT B Questions & Answers (ESSAY, OBJ, THEORY, PRACTICALS ETC)
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(3ai)
(i) freshwater pond culture
(ii) rice-fish culture or integrated fish farming;
(iii) brackishwater finfish culture
(iv) mariculture involving extensive culture

(3aii)
(i)Nets
(ii)Hook and Line
(iii)Traps
(iv)Grappling Devices

(3bi)
(i)paddler
(ii)Canoe Seats
(iii)Thwarts
(iv)Gun wale

(3bii)
(i)Paddler; is used for moving the canoe
(ii)Canoe; seats are used for sitting
(iii)Thwarts; are mounted to the gunnels to provide added structural support for the canoe,
(iv)Gun wale; also provide a mounting surface to mount thing

(3c)
(i)floats
(ii)Lead sinker
(iii)Net
(iv)Hooks


2021 WAEC MAY/JUNE FISHERIES ALT B Questions & Answers (ESSAY, OBJ, THEORY, PRACTICALS ETC)
=======


(4ai)
(i)hook and line
(ii)traps
(iii)nets

(4aii)
(i)Agricultural waste
(ii)Chemicals
(iii)Oil Pollution.
(iv)Radioactive Waste.
(v)Urban Development.

(4b)
(i)They are relatively simple to build
(ii)Inexpensive per unit of surface area,
(iii)low maintenance is required

(4ci)
(i)A suitable method for feeding when floating feed is involved.
(ii)It is a smart way of feeding in a large water body.
(iii)It is the best method of feeding when different species of fishes are stocked in the same pond.

(4cii)
(i)It helps the farmer to have firsthand knowledge of his fishes during feeding.
(ii)It helps the farmer to reduce waste, especially when sinking pelletized feed is used in feeding.
(iii)The health condition of a stock of fish can be assessed at a glance when they converged to feed.


2021 WAEC MAY/JUNE FISHERIES ALT B Questions & Answers (ESSAY, OBJ, THEORY, PRACTICALS ETC)
====


(5a)
(i)Fishmongers
(ii)Fishery area manager
(iii)The fish law enforcement agent
(iv)Watershed council co-ordinator
(v)Environmental educator

(5bi)
(i)Amphilidae
(ii)Anabantidae
(iii)Bagridae
(iv)Carangidae

(5bii)
(i)The lining is important for weed control
(ii)Treating pond water
(iii)Lining enhance fertilization
(iv)The lining helps prevent wide swings of PH
(v)The lining adds calcium and magnesium

(5c)
(i)Drying
(ii)Salting
(iii)Smoking
(iv)Pickling
(v)Steaming


2021 WAEC MAY/JUNE FISHERIES ALT B Questions & Answers (ESSAY, OBJ, THEORY, PRACTICALS ETC)
=======

 

 

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QUESTIONS AND ANSWERS FOR 2021 WAEC MAY/JUNE FISHERIES ALT B ANSWERS


EXAM DETAILS:


PIN: 4551
Subject:
Exam:
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Updated At: April 12th 2021, (09:04:14)

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