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