Fishery JAMB Past Questions And Answers (Objectives and Theory)
20 Fishery Jamb questions along with options and answers, followed by 5 theory questions and answers as Section B:
Section A: Multiple Choice Questions
Which of the following is not a primary method of fish capture?
A) Trawling
B) Longlining
C) Fish farming
D) Gillnetting
Answer: C) Fish farming
What is the primary function of a fish weir?
A) Harvesting fish eggs
B) Capturing fish using nets
C) Directing fish into a trap
D) Separating different fish species
Answer: C) Directing fish into a trap
Which fishing gear is specifically designed to catch crustaceans?
A) Trawl net
B) Purse seine
C) Lobster pot
D) Gillnet
Answer: C) Lobster pot
In fisheries management, what does MSY stand for?
A) Maximum Sustainable Yield
B) Maximum Stock Yield
C) Marine Species Yield
D) Managed Stock Yield
Answer: A) Maximum Sustainable Yield
What is the term for the process of removing unwanted fish from a catch before landing?
A) Sorting
B) Culling
C) Grading
D) Trimming
Answer: B) Culling
Which of the following is not a method of fish preservation?
A) Smoking
B) Canning
C) Salting
D) Grilling
Answer: D) Grilling
What is the correct sequence of stages in fish development from egg to adult?
A) Fry, fingerling, juvenile, adult
B) Fingerling, juvenile, fry, adult
C) Fry, juvenile, fingerling, adult
D) Adult, fry, juvenile, fingerling
Answer: C) Fry, juvenile, fingerling, adult
Which of the following is a bony fish?
A) Shark
B) Tuna
C) Salmon
D) Eel
Answer: C) Salmon
What is the main purpose of fishery science?
A) To increase fish population
B) To maximize fishery profits
C) To sustainably manage fish resources
D) To develop new fishing technologies
Answer: C) To sustainably manage fish resources
Which type of fishing involves the use of a baited hook attached to a fishing line?
A) Trawling
B) Purse seining
C) Longlining
D) Pot fishing
Answer: C) Longlining
What is the term for the process of removing scales from fish?
A) Scaling
B) Skinning
C) Dressing
D) Filleting
Answer: A) Scaling
Which fishing method involves dragging a net along the sea floor?
A) Trawling
B) Seining
C) Longlining
D) Jigging
Answer: A) Trawling
What is the primary function of a fish aggregating device (FAD)?
A) Attracting predators to reduce prey population
B) Providing shelter for fish to spawn
C) Concentrating fish for easier capture
D) Separating different species of fish
Answer: C) Concentrating fish for easier capture
Which of the following is a freshwater fish?
A) Cod
B) Haddock
C) Trout
D) Halibut
Answer: C) Trout
What is the process of removing unwanted bycatch from fishing gear?
A) Discarding
B) Retaining
C) Landing
D) Sorting
Answer: A) Discarding
Which of the following is not a factor affecting fish distribution?
A) Temperature
B) Depth
C) Current
D) Cloud cover
Answer: D) Cloud cover
What is the term for the area of water where rivers meet the sea?
A) Estuary
B) Delta
C) Lagoon
D) Basin
Answer: A) Estuary
Which fishing gear is designed to capture fish by encircling them in a large wall of netting?
A) Trawl net
B) Purse seine
C) Longline
D) Gillnet
Answer: B) Purse seine
What is the term for the process of removing entrails from a fish?
A) Dressing
B) Gutting
C) Filleting
D) Trimming
Answer: B) Gutting
Which of the following is not a type of aquaculture?
A) Trout farming
B) Oyster farming
C) Crab farming
D) Tuna farming
Answer: D) Tuna farming
Section B: Theory Questions
Define overfishing and discuss its consequences on marine ecosystems and fish populations.
Answer: Overfishing refers to the depletion of fish stocks caused by excessive harvesting beyond sustainable levels. Consequences include decline in fish populations, disruption of marine food chains, loss of biodiversity, and economic impacts on fishing communities.
Explain the concept of bycatch and discuss strategies to minimize its occurrence in commercial fishing operations.
Answer: Bycatch refers to the unintentional capture of non-target species during fishing operations. Strategies to minimize bycatch include modifying fishing gear, implementing area and time closures, using selective fishing techniques, and promoting education and awareness among fishermen.
Describe the role of marine protected areas (MPAs) in fisheries management and conservation.
Answer: Marine protected areas are designated areas where human activities, including fishing, are regulated or prohibited to conserve marine resources and biodiversity. They help replenish fish stocks, protect critical habitats, and maintain healthy ecosystems, ultimately supporting sustainable fisheries.
Discuss the importance of sustainable fisheries management practices in ensuring the long-term viability of fish stocks and marine ecosystems.
Answer: Sustainable fisheries management practices aim to balance the needs of present and future generations by ensuring that fish stocks are harvested at a rate that allows them to replenish naturally. These practices include setting catch limits, implementing gear restrictions, monitoring and enforcing regulations, and promoting ecosystem-based approaches to management.
Explain the concept of aquaculture and discuss its role in meeting the increasing global demand for seafood.
Answer: Aquaculture involves the cultivation of aquatic organisms, such as fish, shellfish, and aquatic plants, under controlled conditions.
