2020/2021 WAEC/NECO Answers: 2021 neco fishery answer



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(4ai)

Water quality refers to the chemical, physical, biological, and radiological characteristics of water. It is a measure

of the condition of water relative to the requirements of

one or more biotic species and or to any human need or

purpose.


(4aii)

(i)temperature,

(ii)dissolved oxygen

(iii)pH level 

(iv)Ammonia. 

(v)Water turbidity

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

(5ai)

stocking- is the practice of raising 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.


Stocking- density is the quantity of fry or fingerlings per unit of water area.


(5aii)

(i)Fertilization of the pond/addition of manure.

(ii)Maintaining water level.

(iii)Repair of pond and the fence.

(iv)Cropping /selective removal of excess fish.


(5bi)

(i)Pseudomonas fluorescens

(ii)Ichthyophthirius multifiliis 

(iii)fungal infections 

(iv)Eustrongylides 

(v)copepods


(5bii)

(i)Anorexia (loss of appetite, refusing all food, with consequential wasting)

(ii)Rapid breathing

(iii)Hiding abnormally

(iv)Resting on the bottom


(5c)

Area= length x breadth 

Area= 30 x 20

Area = 600m²


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A1: 1 x 4 = 4 B2: 3 x 3.6 = 10.8 C4: 1 x 2.8 = 2.8 Total points: 4 + 10.8 + 2.8 = 17.6 Now, we divide the UTME by 8 i.e 280 ? 8 = 35 So, the aggregate score will be 17.6 + 35 + Post-UTME score.


waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Is e8 a pass mark?


waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam

Is d7 fail in Waec?

You are required to get at least a credit pass (50%) in your core subjects. Under the new WAEC grading system, A1 is Excellent, B2 Very Good, B3 Good, C4, C5 and C6 are interpreted as Credit, D7 and D8 are interpreted as Pass, while F9 is Fail.


How is Waec aggregate calculated?

A1: 1 x 4 = 4 B2: 3 x 3.6 = 10.8 C4: 1 x 2.8 = 2.8 Total points: 4 + 10.8 + 2.8 = 17.6 Now, we divide the UTME by 8 i.e 280 ? 8 = 35 So, the aggregate score will be 17.6 + 35 + Post-UTME score.


A1: 1 x 4 = 4 B2: 3 x 3.6 = 10.8 C4: 1 x 2.8 = 2.8 Total points: 4 + 10.8 + 2.8 = 17.6 Now, we divide the UTME by 8 i.e 280 ? 8 = 35 So, the aggregate score will be 17.6 + 35 + Post-UTME score.

What are the grades in Waec?

Under the new WAEC grading system, A1 is Excellent, B2 Very Good, B3 Good, C4, C5 and C6 are interpreted as Credit, D7 and D8 are interpreted as Pass, while F9 is Fail. A1 and B2 in the WASSCE means Excellent, B3 is B (Very Good), C4 is C (Good), C5 and C6 are D (Credit), D7 and E8 are E (Pass) and F9 is F (Fail).


waec expo runs is real. WAEC Answers, NECO ANSWERS and GCE answers comes a night before exam or Hours before exam
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