WAEC 2022 Fisheries obj And Essay Answer-May/June Expo

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Fishery-Obj!
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FISHERIES ANSWER

(1ai)
Feeding regime refers to the diets, amounts, and schedules of nutritional intake specified in a plan.

(1aii)
(i) Hand feeding
(ii) Demand feeder
(ii) Automatic feed blower

(1aiii)
(i) allows uniform feeding and observation of appetite and feed response
(ii) cost and labour efficient, reflects on appetite and condition of fish
(iii) wide area of distribution of at least 1:5,000 feeder fish ratio

(1bi)
Monoculture refers to the culture of a single species of fish in a pond or tank. It offers high production and quality.

(1bii)
Polyculture is the practice of culturing more than one species of aquatic organism in the same pond.

(1biii)
Integrated fish farming is a system of producing fish in combination with other agricultural or livestock farming operations centered around the fish pond.

(1ci)
(i) Lowers the amount of extra land required
(ii) It is efficient and more profitable to the farmer

(1cii)
(i) Creates many employment opportunities
(ii) More fish can be cultivated and production from the short places.

(1ciii)
(i) Provides affordable feeds
(ii) Reduces the cost of feeding
====================

(2ai)
(i)Trawls and dredges
(ii)Seine nets

(2aii)
(i) longlines
(ii) Traps and pots.

(2b)
(i) Use mesh rod covers when transporting your fishing rods.
(ii) Keep your rods straight and together while on the boat.
(iii) Remove any hooks or lures after fishing

(2c)
(i)The possibility of fishing in all available depths. 
(ii)The possibility of fishing on any slope of the bottom. 
(iii)The possibility of fishing in almost all habitats in lake/ reservoir.

(2d)
(i) Handline
(ii) Yoke
(iii) Mesh
(iv) Braille lines
(v) Lead lines

(2e)
(i)pH; METTLER TOLEDO
(ii)Turbidity; nephelometer
(iii)Temperature; thermometer
(iv)Conductivity; METTLER TOLEDO
(v)Dissolved oxygen; METTLER TOLEDO
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(4a)
(i)It reduces food supplies
(ii)Degrading spawning beds
(iii)Affecting gill function. 
(iv)It increases predators effect. 
(v)It reduces feeding efficiency

(4bi)
Inbreeding of fish is the mating of relatives, or the mating of fish more closely related than the population average (which is another way of defining relatives).

(4c)
[img]https://i.imgur.com/vbUET6g.jpg[/img]

(4di)
Partial harvesting can be done when bigger fish are removed to allow smaller ones space to grow before total harvesting.

(4dii)
Total harvesting is when all the fish present are removed from it, being harvested either inside the pond or outside.
========================


(6a)
(i)Hatcheries can provide food sources to carnivorous fish,
enabling their continued supply.
(ii)Hatcheries allow for the replenishment of fish in sea
waters.
(iii)The process of running fish hatcheries is very labor-
intensive.
(iv) Hatcheries protect aquatic species from disappearing
from ecosystems.

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