- 1. 1. Brining is the treatment of fish with __________.
A) Sun heat
B) micro wave
C) Smoke
D) salt
- 2. 2. A fish pond manager who needs to avoid cannibalism in his fish pond may do one of the following
A) Vaccination
B) Sanitation
C) Feeding
D) Grading
- 3. 3. Spawning is a fishery term that describes
A) Brooding of eggs in the mouth
B) Release of eggs at the sea shore
C) Release of eggs by the ovary
D) Release of fries from fertilised eggs
- 4. 4. It is a requirement to feed your fish beyond maintenance need. What would you do ensure this?
A) Serve the ration twice daily
B) Serve 3% of total body weight of fish
C) Ensure a feed conversion ratio 1:2
D) Feed fish at a position
- 5. 5. Shore ward migration of fishes involves movement from water to _______
A) land
B) Space
C) Water
D) Rock
- 6. 6. A feed conversion ratio of 1:2 is what percentage of feed to average body weight of fish?
A) 25%
B) 100%
C) 75%
D) 50%
- 7. 7. Passive movement of fishes is termed
A) Dispersal
B) Swimming
C) Drifting
D) Schooling
- 8. 8. One of these can be regarded a natural feed
A) Water lettuce
B) Wheat offal
C) Kitchen waste
D) Fish meal
- 9. 9. A type of feed usually associated with intensive fish production is
A) Complete
B) Artificial
C) Supplementary
D) Natural
- 10. 10. A method of fish processing involving slicing the flesh of fish parallel to its back bone is called
A) Chopping
B) Grating
C) Filleting
D) Brining
- 11. 11. Species as a factor of fish preference for natural feed refers to ________
A) Feeding habit
B) Size
C) Age
D) Sex
- 12. 12. On which of these occasions would you stop feeding your fish?
A) During cannibalism
B) After transportation
C) At market size
D) Before sorting
- 13. 13. Osmo regulatory migration is aimed at
A) Salt and water balance
B) Feeding
C) Spawning
D) Length of day light
- 14. 14. The practice of stocking same size of fish in a pond prevents all except
A) Feeding efficiency
B) Poor harvest
C) Predation
D) Inaccurate stocking
- 15. 15. Fishes that are newly introduced into the pond from the hatchery are made to swim freely into the pond to avoid
A) Sinking
B) Canniballism
C) Aging
D) Stress
- 16. 16. Which of these is a reason for mono sexual stocking of fish pond?
A) Genetic diversity
B) Predation
C) Controlled breeding
D) Accurate stocking
- 17. 17. The practice of cutting through fish abdomen to remove its viscera is
A) Deworming
B) Degutting
C) Flushing
D) Disbudding
- 18. 18. Ell is a good example of which migratory fish?
A) Anadromous
B) Terrestial
C) Vertical
D) Oceanodromous
- 19. 19. In order to initiate the growth of plankton in the pond, fish pond managers may adopt one of these
A) Pest control
B) Regular harvest
C) Blocking leakages
D) Applying fertilizer
- 20. 20. One of these does not lead to a reduced level of dissolved oxygen available to fish in the pond
A) Excess feed
B) Weed
C) Over crowding
D) Water current
- 21. 21. Genetic diversity as a significance of fish migration means that
A) there is the chance of mating between fishes with much distinct characters
B) fishes are prone to quick rearrangement of genes
C) the young ones of migratory fishes are widely dispersed
D) young fishes possess genes that will not be inherited
- 22. 22. An example of a potamodromous migratory fish is
A) Tuna
B) Ell
C) Sword fish
D) Catfish
- 23. 23. Why is a low water temperature a reason to stop feeding?
A) Fish sink
B) Fish metabolism reduces
C) Flooding increases
D) Fish become restless
- 24. 24. If 250 fish of average weight 400g are stocked in a monoculture pond, calculate their DFR
A) 4kg
B) 2kg
C) 5kg
D) 3kg
- 25. 25. The developmental stage of fish produced after hatching is
A) Larva
B) Fry
C) Juvenile
D) Fingerlin
- 26. 26. The range of temperature to which fish is exposed during hot smoking is between
A) 70°C - 80°C
B) 70°C - 80°C
C) 20°C - 30°C
- 27. 27. One of these is not a way of serving supplementary feed to fish
A) Wet
B) Life
C) Dry
D) Spread
- 28. 28. Mariculture as a fishery term describes raising of fish in the
A) Lake
B) Sea
C) River
D) Lagoon
- 29. 29. One of these water parameters is used to determine the quantity of natural feed available in a pond
A) Dissolved oxygen
B) Volume
C) Transparency
D) Temperature
- 30. 30. Acceptability of feed by livestock has to do with
A) Cost
B) Feeding habit
C) Health
D) Texture
- 31. 31. Amount of natural feed as a determinant in meeting the maintainance need of fish will prevent all but one
A) Insufficient dissolves oxygen
B) Water pollution
C) Feed wastage
D) Feeding rate
- 32. 32. All of these determines frequency of feeding except
A) Cost of feed
B) Size of feed
C) Water temperature
D) Ageof fish
- 33. 33. The two ways of distributing feed are _______ and positioning
A) Wet
B) Spreading
C) Dry
D) Life
- 34. 34. The factors determining fish migration include
A) Age
B) Size
C) Spicies
D) Water current
- 35. 35. A random locomotory movement of fishes is
A) Latitudinal
B) Dispersal
C) Vertical
D) Drifting
- 36. 36. One disadvantage of fish movement is
A) Obstacle
B) Protection
C) Genetic diversity
D) Osmoregulation
- 37. 37. Movement of fish from south pole to north pole and vice versa is
A) Shoreward
B) Climatic
C) Swimming
D) Latitudinal
- 38. 38. One diadromous migration of fishes is termed
A) Catadromy
B) Oceanodromy
C) Contrarheotaxis
D) Potamodromy
- 39. 39. Sorting describes
A) Grouping of fish by sex
B) All kinds of grouping of fish
C) Grouping of fish by hygiene
D) Grouping of fish by size
- 40. 40. There is the need to stop feeding your fish before stressing activities like sorting for all except one of these?
A) To avoid cannbalism
B) To prevent pollution
C) To avoid wastage
D) To prevent aggression
|