SS2 Fishery Exam
  • 1. The quantity of fry per unit water area is
A) Stocking
B) Stocking density
C) Liming
D) Fertilization
  • 2. ……….. are natural synthetic substances that are used in ponds to increase the production of natural foods organisms to be eaten by the fish.
A) Feeding
B) Liming
C) Fertilization
D) Stocking
  • 3. The application of various acid neutralizing compounds of calcium and magnesium is called
A) Fertilization
B) Liming
C) Stocking
D) Feeding
  • 4. The act of separating immature fish from the mature ones is
A) Stocking
B) Species
C) Harvesting
D) Sorting
  • 5. One of these is not a natural food in the fish pond
A) Snail
B) Terrestrial plants
C) Plankton
D) Worms
  • 6. …………. Feeds are made from a mixture of carefully selected ingredients to provide all the nutrients necessary for fish to grow.
A) Natural
B) Complete
C) Supplementary
D) Intensive
  • 7. Fish processing depends greatly on all except
A) Time
B) Technical knowledge
C) Protein
D) Storage facilities
  • 8. Fish culture system that depends entirely on complete feed for survival is called
A) Extensive system
B) Monoculture
C) Intensive system
D) Poly culture
  • 9. Spot feeding involves
A) Feeding of fish at 10hours interval
B) Feeding of fish at night
C) Feeding of fish at a particular point
D) Feeding of fish at any point
  • 10. The instrument used for testing acidity level of dam water is
A) Conductivity meter
B) ph meter
C) Barometer
D) Thermometer
  • 11. Which of the following causes competition in cultured fish
A) High water level
B) Over feeding
C) Under stocking
D) Over stocking
  • 12. What is the area of an earthen pond whose length is 215m and breath is 115m?
A) 12362.5m2
B) 100m2
C) 330m2
D) 24725m2
  • 13. The following are fish feed ingredients of plant origin except
A) Cassava peel
B) Bone meal
C) Rice bran
D) Maize meal
  • 14. ……….. refers to enzymatic degradation that results in the cell damage of fish and release of an enzyme which degrade the cell components
A) Chemical
B) Autolysis
C) Bacterial
D) Fermented microorganisms
  • 15. One of these is not a method of preserving fish
A) Chilling
B) Smoking
C) Spreading
D) Salting
  • 16. Pond management practices involves all except
A) Monitoring
B) Stocking
C) Liming
D) Canning
  • 17. One of these is not a factor responsible for food spoilage
A) Proper handling
B) Ambient temperature
C) Moisture content of fish
D) Weak muscle tissue
  • 18. The act of enclosing fish by packing is known as
A) Fish processing
B) Fish packaging
C) Fish harvesting
D) Fish preservation
  • 19. The union of two gametes (egg and milt) to form a zygote is called
A) Hatching
B) Additives
C) Fertilization
D) Ovulation
  • 20. Fish meal, fish oil, fish mince are
A) Fish meals
B) Fish additives
C) Raw materials
D) By products
  • 21. Food shortage can be minimized by
A) Natural hazard
B) Hoarding
C) Illegal exportation of farm produce
D) Efficient pest control services
  • 22. Which one is odd. Fish need to eat to
A) Reproduce
B) Sunlight
C) Grow
D) Survive
  • 23. The chief spoilage organisms on smoked fish are
A) Bacteria
B) Fungi
C) Virus
D) Mold
  • 24. Sexually mature aquatic organism is know as
A) Broodstock
B) Fingerlings
C) Ijebu size
D) Juvenile
  • 25. Fat decomposition is known as_________ microorganisms
A) Lipolytic
B) Fermented
C) Liposuction
D) Proteolytic
  • 26. _______ is a long term preservation of seafoods
A) None
B) All
C) Freezing
D) Chilling
  • 27. The spoilage in fish is accompanied by all except
A) Change in Colour
B) Chilling
C) Change in texture
D) Change in odour
  • 28. The harvesting of already existing population of fish and other aquatic animals is called
A) Aquaculture
B) Fishing
C) Poly culture
D) Aquarium
  • 29. Fish lives entirely on______ and swim by the means of_______
A) Water, mouth
B) Water, scales
C) Water, gills
D) Water, fins
  • 30. One of theses is not correct
A) Fish have gills
B) All fish have scales
C) All fish have gills
D) Fish have brain
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