*NECO FISHERIES*
*NUMBER THREE*
(3a)
(PICK ANY FIVE)
(i) Broodstock selection and management: Selecting healthy, sexually mature male and female fish with desirable characteristics.
(ii) Hormonal induction of spawning: Administering hormones to induce the release of eggs and sperm from the broodstock.
(iii) Egg fertilization: Mixing the released eggs and sperm to facilitate fertilization.
(iv) Egg incubation: Providing the appropriate conditions (temperature, water quality, etc.) for the fertilized eggs to develop and hatch.
(v) Larval rearing: Caring for the newly hatched larvae, providing them with the necessary nutrients and environmental conditions for growth and survival.
(vi) Fingerling production: Rearing the larvae into fingerlings, which are then ready for stocking in nursery or grow-out ponds.
(3bi)
(PICK ANY TWO)
(i) Reduce water supersaturation levels by aeration or adjusting water flow.
(ii) Identify and eliminate the source of gas supersaturation (e.g., clogged or malfunctioning aeration equipment).
(iii) Quarantine affected ponds to prevent the transfer of infected fish to other ponds.
(iv) Regularly monitor water quality parameters, especially dissolved gas levels.
(v) Improve water circulation and mixing to prevent localized gas supersaturation.
(vi) Treat affected fish with appropriate medications or remedies to alleviate the condition.
(3bii)
-Extensive fish farming-
(PICK ANY TWO)
(i) Low stocking density
(ii) Reliance on natural food sources
(iii) Minimal external inputs (e.g., feed, fertilizers)
(iv) Lower capital and operational costs
(v) Lower productivity per unit area
(vi) Dependence on natural environmental conditions
-Intensive fish farming-
(PICK ANY TWO)
(i) High stocking density
(ii) Reliance on artificial feeding
(iii) Requirement for external inputs (e.g., feed, aeration, water treatment)
(iv) Higher capital and operational costs
(v) Higher productivity per unit area
(vi) Greater control over environmental conditions
(3ci)
Monoculture refers to the cultivation or farming of a single species of organism, such as a single fish species, in a given aquaculture system.
(3cii)
(PICK ANY THREE)
(i) Chlorine
(ii) Iodine
(iii) Formalin
(iv) Hydrogen peroxide
(v) Potassium permanganate
(vi) Benzalkonium chloride
(3ciii)
(PICK ANY FOUR)
(i) Viral Nervous Necrosis (VNN)
(ii) Viral Hemorrhagic Septicemia (VHS)
(iii) Infectious Pancreatic Necrosis (IPN)
(iv) Koi Herpesvirus Disease (KHV)
(v) Spring Viremia of Carp (SVC)
(vi) Infectious Hematopoietic Necrosis (IHN)
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*NUMBER THREE*
(3a)
(PICK ANY FIVE)
(i) Broodstock selection and management: Selecting healthy, sexually mature male and female fish with desirable characteristics.
(ii) Hormonal induction of spawning: Administering hormones to induce the release of eggs and sperm from the broodstock.
(iii) Egg fertilization: Mixing the released eggs and sperm to facilitate fertilization.
(iv) Egg incubation: Providing the appropriate conditions (temperature, water quality, etc.) for the fertilized eggs to develop and hatch.
(v) Larval rearing: Caring for the newly hatched larvae, providing them with the necessary nutrients and environmental conditions for growth and survival.
(vi) Fingerling production: Rearing the larvae into fingerlings, which are then ready for stocking in nursery or grow-out ponds.
(3bi)
(PICK ANY TWO)
(i) Reduce water supersaturation levels by aeration or adjusting water flow.
(ii) Identify and eliminate the source of gas supersaturation (e.g., clogged or malfunctioning aeration equipment).
(iii) Quarantine affected ponds to prevent the transfer of infected fish to other ponds.
(iv) Regularly monitor water quality parameters, especially dissolved gas levels.
(v) Improve water circulation and mixing to prevent localized gas supersaturation.
(vi) Treat affected fish with appropriate medications or remedies to alleviate the condition.
(3bii)
-Extensive fish farming-
(PICK ANY TWO)
(i) Low stocking density
(ii) Reliance on natural food sources
(iii) Minimal external inputs (e.g., feed, fertilizers)
(iv) Lower capital and operational costs
(v) Lower productivity per unit area
(vi) Dependence on natural environmental conditions
-Intensive fish farming-
(PICK ANY TWO)
(i) High stocking density
(ii) Reliance on artificial feeding
(iii) Requirement for external inputs (e.g., feed, aeration, water treatment)
(iv) Higher capital and operational costs
(v) Higher productivity per unit area
(vi) Greater control over environmental conditions
(3ci)
Monoculture refers to the cultivation or farming of a single species of organism, such as a single fish species, in a given aquaculture system.
(3cii)
(PICK ANY THREE)
(i) Chlorine
(ii) Iodine
(iii) Formalin
(iv) Hydrogen peroxide
(v) Potassium permanganate
(vi) Benzalkonium chloride
(3ciii)
(PICK ANY FOUR)
(i) Viral Nervous Necrosis (VNN)
(ii) Viral Hemorrhagic Septicemia (VHS)
(iii) Infectious Pancreatic Necrosis (IPN)
(iv) Koi Herpesvirus Disease (KHV)
(v) Spring Viremia of Carp (SVC)
(vi) Infectious Hematopoietic Necrosis (IHN)
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ELECTRICAL INSTALLATION QUESTIONS⁉️
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*FISHERY OBJ*
01-10: EBEDDEDCDE
11-20: DDAEBCCDBA
21-22: DC
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*More coming*
01-10: EBEDDEDCDE
11-20: DDAEBCCDBA
21-22: DC
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*More coming*
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FISHERIES
2a) Drawing
2b)
1. Reduced growth and development
2. Increased susceptibility to disease
3. Reduced reproduction
4. Increased mortality
2ci)
1. Formulated nutrition: Fish feed is specifically formulated to provide fish with the necessary nutrients, vitamins, and minerals they need to support their growth, development, and overall health.
2. High-quality protein: Fish feed typically contains a high percentage of protein, as fish require a diet rich in protein to support their muscle growth and overall health.
3. Palatability: Fish feed is designed to be palatable to fish, meaning that it is attractive to them and encourages them to eat and digest the feed effectively.
2cii)
1. Formulated nutrition: Fish feed is formulated to provide fish with the necessary nutrients, vitamins, and minerals they need to support their growth, development, and overall health. This means that fish feed is specifically designed to meet the specific nutritional needs of different fish species, depending on their life stage, growth rate, and other factors.
2. High-quality protein: Fish feed typically contains a high percentage of protein, as fish require a diet rich in protein to support their muscle growth and overall health. This means that fish feed is formulated to provide fish with the necessary amino acids they need to build and repair their muscles, as well as to support their immune systems and other bodily functions.
2ciii)
1. Tank or aquarium: The main component of an aquarium is the tank or aquarium itself, which provides a habitat for the fish and other aquatic organisms.
2. Filtration system: An aquarium requires a filtration system to maintain clean and healthy water. This system typically includes a mechanical filter, a biological filter, and other components to remove waste products and maintain proper water quality.
3. Lighting: Aquariums require proper lighting to support the growth of aquatic plants and to provide fish with the necessary light spectrum for their visual system.
4. Heating and cooling: Depending on the location and climate, aquariums may require heating or cooling to maintain the optimal water temperature for the fish and other aquatic organisms.
5. Decorations and accessories: Aquariums can be enhanced with various decorations and accessories, such as rocks, plants, and artificial structures, to provide fish with hiding places and visual stimulation.
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2a) Drawing
2b)
1. Reduced growth and development
2. Increased susceptibility to disease
3. Reduced reproduction
4. Increased mortality
2ci)
1. Formulated nutrition: Fish feed is specifically formulated to provide fish with the necessary nutrients, vitamins, and minerals they need to support their growth, development, and overall health.
2. High-quality protein: Fish feed typically contains a high percentage of protein, as fish require a diet rich in protein to support their muscle growth and overall health.
3. Palatability: Fish feed is designed to be palatable to fish, meaning that it is attractive to them and encourages them to eat and digest the feed effectively.
2cii)
1. Formulated nutrition: Fish feed is formulated to provide fish with the necessary nutrients, vitamins, and minerals they need to support their growth, development, and overall health. This means that fish feed is specifically designed to meet the specific nutritional needs of different fish species, depending on their life stage, growth rate, and other factors.
2. High-quality protein: Fish feed typically contains a high percentage of protein, as fish require a diet rich in protein to support their muscle growth and overall health. This means that fish feed is formulated to provide fish with the necessary amino acids they need to build and repair their muscles, as well as to support their immune systems and other bodily functions.
2ciii)
1. Tank or aquarium: The main component of an aquarium is the tank or aquarium itself, which provides a habitat for the fish and other aquatic organisms.
2. Filtration system: An aquarium requires a filtration system to maintain clean and healthy water. This system typically includes a mechanical filter, a biological filter, and other components to remove waste products and maintain proper water quality.
3. Lighting: Aquariums require proper lighting to support the growth of aquatic plants and to provide fish with the necessary light spectrum for their visual system.
4. Heating and cooling: Depending on the location and climate, aquariums may require heating or cooling to maintain the optimal water temperature for the fish and other aquatic organisms.
5. Decorations and accessories: Aquariums can be enhanced with various decorations and accessories, such as rocks, plants, and artificial structures, to provide fish with hiding places and visual stimulation.
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*NECO FISHERIES*
*NUMBER FOUR*
(4a)
(PICK ANY FOUR)
(i) Water quality
(ii) Stocking density
(iii) Transport duration
(iv) Acclimatization
(v) Oxygen supply
(vi) Handling and containers
(4bi)
(PICK ANY THREE)
(i) Higher catch and production volumes
(ii) Improved efficiency and technology
(iii) Access to larger and more distant fishing grounds
(iv) Potential for export and international trade
(v) Economies of scale and profitability
(vi) Ability to meet the growing demand for seafood
(4bii)
(i) Potential for overfishing and depletion of fish stocks
(ii) Environmental impact from large-scale fishing operations
(4ci)
[In Tabular Form]
-Fresh fish-
(PICK ANY TWO)
(i) Shorter shelf life
(ii) Requires refrigeration or ice for preservation
(iii) Milder flavor
(iv) Softer texture
(v) Higher moisture content
(vi) Shorter preparation time
-Smoked fish-
(PICK ANY TWO)
(i) Longer shelf life
(ii) Can be stored at room temperature
(iii) Stronger, more distinct flavor
(iv) Firmer texture
(v) Lower moisture content
(vi) Longer preparation time (smoking process)
(4cii)
(PICK ANY FOUR)
(i) Water quality management
(ii) Feeding and nutrition management
(iii) Disease prevention and treatment
(iv) Pond/tank maintenance and cleaning
Stocking density and population control
(vi) Harvest and post-harvest handling
(4ciii)
Length = 92,000 cm
Breadth = 62,000 cm
Area = Length x Breadth
Area = 92,000 cm x 62,000 cm
Area = 5,704,000,000 cm²
Area = 5,704,000 m²
Therefore, the area of the rectangular pond is 5,704,000 m²
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*NUMBER FOUR*
(4a)
(PICK ANY FOUR)
(i) Water quality
(ii) Stocking density
(iii) Transport duration
(iv) Acclimatization
(v) Oxygen supply
(vi) Handling and containers
(4bi)
(PICK ANY THREE)
(i) Higher catch and production volumes
(ii) Improved efficiency and technology
(iii) Access to larger and more distant fishing grounds
(iv) Potential for export and international trade
(v) Economies of scale and profitability
(vi) Ability to meet the growing demand for seafood
(4bii)
(i) Potential for overfishing and depletion of fish stocks
(ii) Environmental impact from large-scale fishing operations
(4ci)
[In Tabular Form]
-Fresh fish-
(PICK ANY TWO)
(i) Shorter shelf life
(ii) Requires refrigeration or ice for preservation
(iii) Milder flavor
(iv) Softer texture
(v) Higher moisture content
(vi) Shorter preparation time
-Smoked fish-
(PICK ANY TWO)
(i) Longer shelf life
(ii) Can be stored at room temperature
(iii) Stronger, more distinct flavor
(iv) Firmer texture
(v) Lower moisture content
(vi) Longer preparation time (smoking process)
(4cii)
(PICK ANY FOUR)
(i) Water quality management
(ii) Feeding and nutrition management
(iii) Disease prevention and treatment
(iv) Pond/tank maintenance and cleaning
Stocking density and population control
(vi) Harvest and post-harvest handling
(4ciii)
Length = 92,000 cm
Breadth = 62,000 cm
Area = Length x Breadth
Area = 92,000 cm x 62,000 cm
Area = 5,704,000,000 cm²
Area = 5,704,000 m²
Therefore, the area of the rectangular pond is 5,704,000 m²
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FISHERIES
5a)
- Salt
- Sugar
- Vinegar
- Smoking
5b)
- Tilapia fish are native to Africa, while catfish are native to North America.
- Tilapia fish are generally more tolerant of warm water temperatures than catfish.
5ci)
- Disease
- Poor water quality
- Inadequate feeding
- Physical injury
(5cii)
- Wells
- Rivers
- Groundwater
(5ciii)
- A hard exoskeleton
- Two large claws
- A long, slender tail
- A pair of antennae
- A pair of compound eyes
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5a)
- Salt
- Sugar
- Vinegar
- Smoking
5b)
- Tilapia fish are native to Africa, while catfish are native to North America.
- Tilapia fish are generally more tolerant of warm water temperatures than catfish.
5ci)
- Disease
- Poor water quality
- Inadequate feeding
- Physical injury
(5cii)
- Wells
- Rivers
- Groundwater
(5ciii)
- A hard exoskeleton
- Two large claws
- A long, slender tail
- A pair of antennae
- A pair of compound eyes
Join channel for more👇
https://t.me/ExamkeyNet
👍20🙏5❤4🤬4🥱4🔥1🥰1
FISHERIES OBJ
01-10: EBDDEBDCDA
11-20: DDAACCDEBC
21-30: ECDBDCAAEA
31-40: EBBAEAAEBD
41-50: BAED
51-60:
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More coming
01-10: EBDDEBDCDA
11-20: DDAACCDEBC
21-30: ECDBDCAAEA
31-40: EBBAEAAEBD
41-50: BAED
51-60:
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More coming
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NECO FISHERIES OBJ.
01-10: EBDDEBDCDA
11-20: DDAACCDEBC
21-30: ECDBDCAAEA
31-40: EBBAEAAEBD
41-50: BAEDAACADB
51-60: ABCBBEBBCD
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https://t.me/ExamkeyNet
Completed!
01-10: EBDDEBDCDA
11-20: DDAACCDEBC
21-30: ECDBDCAAEA
31-40: EBBAEAAEBD
41-50: BAEDAACADB
51-60: ABCBBEBBCD
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https://t.me/ExamkeyNet
Completed!
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