2020/2021 WAEC/NECO Answers: 2021 waec Fisheries Answers



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Literature-In-English 2 (Prose) 9:30 a.m. 10:45 a.m.


Literature-In-English 1 (Objective) 10:45 a.m 11:45 a.m

Literature OBJ
1-10: BBDDAABCDB
11-20: AACBBACBBB
21-30: DABACBCDBC
31-40: BBCDDCAAAA
41-50: ADBAABBABC

This is actually the 2019 waec Fisheries AnswersAnswers as questions sent to our subscribers on WHATSAPP, if you are looking for 2021 WAEC/NECO Answers midnight before the exam, try contacting us.


-Fishery specimens 👇
.
A is fertilizer
B Cow dung
C is pond water
D is sec chu disk
E is fish water
G is knife
H is fish meal
I is fish box
J is fish skin
K is gill net
K is cast net

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ai)
Fertilizers used in ponds stimulate the growth of microscopic plants called algae or plankton

(1aii)
(i) Fertilizers are used in ponds to increase the production of the natural food organisms to be eaten by the fish.
(ii) When a fertilizer is added to a fish pond, the chemicals it contains dissolve in the water for fast consumption while cow dung usually contains a lot of insoluble cellulose especially if mixed with stable litter.
(iii) Fertilizers are easy to collect

(1aiii)
(i)Broadcasting/spraying method
(ii)Sac method/spot
(ii)Banding method


(1bi)
(i)groundwater
(ii)surface runoff
(iii)inflows

(1bii)
(i) alkalinity
(ii) hardness
(iii) dissolved oxygen



===============================================
H(2ai)
(i)
Specimen D:
It is used to determine the alkalinity of pond water

(ii)
Specimen E:
It is a valuable tool for monitoring certain parameters of your pond.

(ii)
Specimen F:
It serves as an important source of fish feed

(2aii)
PH meter

(2aiii)
Digram of SECCHI DISC

(2aiv)
(i)Lower specimen E into water slowly
(ii)slowly pull the disk up until you see it again
(iii)average the dept to the nearest half foot and mark on the cord
(iv)record the average depth on the data sheet along with date and time

(2bi)
(i)fiber
(ii)fat
(iii)protein

(2bii)
(i) It helps in Proper growth of finger ling's
(ii) They contain Carbohydrates and fats which yield heat, which maintains body temperature, furnishes energy for growth and muscle activity

==============================================


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H(3a)
Fish bag

(3b)
(i)
Making leather


(ii)
For burn relief
(iii) Fish gelatin obtain from fish skin can be used in the food, pharmaceutical, and photographic industries due to its unique chemical and physical properties

(3c)
(i) For cutting fishes like head cutting, cutting into steaks
(ii) For chopping of cartilages and tendons

(3d)
(i) Fish liver oil
(ii) Fish bone
(iii) Fish Manure
(iv) Fish Body oil
(v) Fish Silage

(3e)
(i) By washing properly
(ii) Sharpen the blade when blunt
(iii) Always cut on cutting boards

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(4a)
(i)Wedged
(ii)Gilled
(iii)Tangled

(4aii)
(i) Wedged – held by the mesh around the body.
(ii) Gilled – held by mesh slipping behind the opercula.
(iii) Tangled – held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh.

(4aiii)
Specimen K
(i) 2-3cm
(ii) Low cost
(iii) It is selective in harvesting
(iv) It harvests mature fishes


Specimen L
(i) 4-7m
(ii) High cost
(iii) It is not selective in harvesting
(iv) It harvests any fish

(4b) DISADVANTAGES OF SPECIMEN L:
(i) High cost
(ii) Time consuming














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