2024 WAEC FISHERIES: WAEC Fisheries (Fishery) 2024 Legit Questions and Answers (4125)

(1a) 

(PICK ANY FIVE)

(i) Fishing nets

(ii) Fishing lines

(iii) Fishing traps

(iv) Fishing hooks

(v) Fishing spears

(vi) Fishing harpoons

(vii) Fishing seines

(1b) 

(PICK ANY THREE)

(i) Ensure the water quality is suitable for the fingerlings, including temperature, oxygen levels, and pH.

(ii) Quarantine the fingerlings before introducing them to the main fish population to prevent the spread of diseases or parasites.

(iii) Handle the fingerlings carefully to minimize stress and injuries during the stocking process.

(iv) Gradually acclimate the fingerlings to the new water environment by adjusting the temperature and gradually introducing them to the water.

(v) Monitor the fingerlings closely after stocking to ensure they are adapting well and provide appropriate feed and nutrition.

(1c)

(PICK ANY FIVE)

(i) Maintaining optimal water quality parameters such as temperature, dissolved oxygen levels, pH, and ammonia levels.

(ii) Providing appropriate and nutritious feed for the fry, such as microalgae or finely ground commercial fish feed.

(iii) Regular monitoring of water quality parameters and adjusting them as needed.

(iv) Maintaining a suitable stocking density to prevent overcrowding and competition for resources.

(v) Regular cleaning and maintenance of the nursery tank to remove excess waste and 'copied from e x p o c o d e . n e t free' prevent the build-up of harmful bacteria or toxins.

(vi) Implementing a proper lighting regime to simulate day and night cycles, which helps regulate the fry's behavior and growth.

(vii) Regularly grading or sorting the fry based on size to minimize size-related competition and ensure uniform growth.

(viii) Minimizing stress on the fry by avoiding sudden changes in water parameters or handling them gently during any necessary transfers or procedures.

(1d)

(i) Fishermen 

(ii) Wholesalers

(iii) Retailers

(2ai)

Fish packaging is the process of appropriately packing and preserving fish and seafood products for storage, transportation, and sale.

(2aii)

(PICK FOUR ONLY)

(i) Plastic Bags

(ii) Styrofoam Trays

(iii) Vacuum-Sealed Pouches

(iv) Wax-Coated Cardboard Boxes

(v) Ice Packs or Gel Packs

(2aiii)

(PICK TWO ONLY)

(i) It provides adequate protection to the fish during handling

(ii) It maintains the freshness of the fish

(iii) It ensures the safety of the fish and the consumers

(iv) It is strong and durable enough to withstand the rigors of transportation and storage

(v) It is compatible with the type of fish being packaged

(2b)

(i) Subsistence fisheries involves small-scale operations WHILE Industrial fisheries involves large-scale operations.

(ii) Subsistence fisheries helps secure food for local consumption WHILE Industrial fisheries are driven by economic motives.

(iii) Subsistence fisheries rely on rudimentary fishing methods WHILE Industrial fisheries employ advanced technology and equipment.

(iv) Subsistence fisheries have a lower environmental impact WHILE Industrial fisheries have significant environmental impacts.

(2c)

(PICK FOUR ONLY)

(i) Water Quality

(ii) Oxygenation

(iii) Density and Space

(iv) Temperature Control

(v) Duration of Transport

(vi) 'copied from e x p o c o d e . n e t free' Container Design

(2d)

(PICK FOUR ONLY)

(i) Wood Chips

(ii) Sawdust

(iii) Wood Pellets

(iv) Herbs and Spices

(v) Tea Leaves

(vi) Fruit Peels

(4ai)

(PICK ANY ONE)

Fish pond fertilization refers to the practice of adding nutrients to a fish pond to enhance the growth of phytoplankton and zooplankton, which serve as a natural food source for fish.

OR

Fish pond fertilization is addition of nutrients to enhance plankton growth, promoting a healthy food chain, and increasing fish production in aquaculture systems.

(4aii)

(PICK ANY THREE)

(i) It is essential to assess the existing water quality in the pond before applying any fertilizers.

(ii) The size and depth of the pond play a role in determining the amount of fertilizer needed.

(iii) The number of fish stocked in the pond is a critical consideration.

(iv) It is important to select a suitable type of  fertilizer that provides the necessary nutrients for the pond and the fish.

(v) Fish farmers should consider the potential environmental impact of fertilizers on the surrounding ecosystem.

(4b)

(PICK ANY THREE)

(i) Low levels of dissolved oxygen can lead to increased stress among fish. 

(ii) It limit their ability to efficiently convert food into energy, resulting in slower growth rates.

(iii) Low dissolved oxygen can cause fish to exhibit abnormal behavior.

(iv) Low dissolved oxygen can contribute to the increase of harmful algal blooms.

(v) It can lead to disturbed aquatic 'copied from e x p o c o d e . n e t free' ecosystem

(4c)

(i) It allows for better distribution of nutrients from uneaten feed and fish accumulated waste throughout the pond, benefiting the overall ecosystem and promoting natural nutrient cycling.

(ii) Allowing some time between feeding and water drainage helps maintain more stable water conditions

(4d)

(i) Inshore fisheries

(ii) Offshore fisheries

(iii) Deep-sea fisheries

(4e)

(PICK ANY FOUR)

(i) Natural water sources

(ii) Rainwater

(iii) Groundwater

(iv) Surface runoff

(v) Irrigation canals

(vi) Water reservoirs

(5a) 

(PICK ANY TWO)

(i) Pond seining

(ii) Cast netting

(iii) Gill netting

(iv) Hand netting

(5bi)

(PICK ANY FIVE)

(i) Gutting

(ii) Filleting

(iii) Drying

(iv) Smoking

(v) Canning

(vi) Freezing

(5bii)

(PICK ANY THREE)

(i) Salting

(ii) Drying

(iii) Smoking

(iv) Fermentation

(5biii)

(PICK ANY THREE)

(i) Refrigeration

(ii) Vacuum packing

(iii) Chemical preservatives

(iv) Irradiation

(v) High-pressure processing

(5c)

(i) Poor water quality, such as high levels of ammonia, nitrites, or low dissolved oxygen can kill fish fry.

(ii) Change in temperature can shock fish fry and potentially cause death.

(iii) Predation by larger fish, birds, or other aquatic organisms.

(iv) Diseases and parasitic infections which can lead to death.

(v) Inadequate feeding practices can result in malnutrition leading to increased mortality.

(5d)

(PICK ANY ONE)

Algal bloom in fisheries refers to excessive growth of algae in water due to human activities, impacting fish populations through toxins, oxygen depletion, and disruption of the food web.

OR

Algal bloom refers to the rapid and excessive growth of algae in bodies of water, such as oceans, lakes, or rivers.

(6a)

[PICK ANY FOUR]

(i) Poor quality water in the pond or aquarium

(ii) Overcrowding of fish in the pond or aquarium

(iii) Poor water management practices such as inadequate filtration and aeration

(iv) Disease outbreaks among the fish

(v) Predation by other animals such as birds or mammals

(vi) Feed management issues such as poor nutrition or overfeeding

(6bi) 

[PICK ANY ONE]

(i) Adding agricultural lime or dolomite to the water to increase its alkalinity

(ii) Installing aeration devices to increase oxygen levels in the water

(iii) Changing the water more frequently to dilute the acidic components

(iv) Avoiding the use of acid-based fertilizers near the pond area

(v) Adding crushed oyster shells or coral to the pond to increase alkalinity

(vi)  Monitoring and adjusting the water chemistry regularly to maintain optimal conditions

(6bii)

[PICK ANY THREE]

(i) Agricultural lime

(ii) Dolomite

(iii) Ash from wood or rice husks

(iv) Crushed coral or shell

(vi) Sodium bicarbonate (baking soda)

(vi) Calcium carbonate (chalk or limestone)