A) Photosynthesis B) Temperature C) Dissolved oxygen D) Respiration
A) Decomposition B) Respiration C) Eutrophication D) Ration
A) Fish feed B) Fish waste C) Fertilizers D) Clay particles
A) 20g/l B) 18F C) 70% D) 2ppm
A) Hydrogen ion B) Hydroxyl ion C) Carbonate ion D) Bicarbonate ion
A) Absence of photosynthesis B) Build up of carbondioxied C) Lethal increase in pH D) Need of buffering system
A) Turbidity and pH B) Photosynthesis and respiration C) Alkalinity and hardness D) Temperature and dissolved oxygen
A) Soya bean cake B) Rice molass C) Biological covers D) Sugar cane bagass
A) Detritus B) Benthos C) Necton D) Plankton
A) 3mlphytoplankton/ 100l of pond water B) 20ppm hardness C) 110% saturated total ammonia D) A water transparency of 60cm
A) Supplementary feed B) Complete feed C) Natural food D) Fish
A) 30% B) 15% C) 50% D) 10%
A) Discourage uniformity in fish size B) Reduce dissolved oxygen consumption of fish C) Encourage food wastage D) Improve nutrient loss by leaching
A) Either B) At selected pond area C) Neither D) On entire pond area
A) 1:2:1 B) 0.5 difference C) 1:2:4 D) 25%
A) 25% B) 4% C) 50% D) 70%
A) High water holding capacity B) Avoiding soil erosion C) Good water drainage D) Disallowing run off into the fish pond
A) Fencing of pond area B) Detailed survey of site C) Fast growing species D) Nearness to market
A) 5cm and 7.5cm B) 5cm and 7.5-10cm C) 7.5-10cm and 5cm D) 7.5cm-5cm
A) Dam B) Ditch C) Spillway D) Monk
A) Tilapia niloticus B) Clarias gariepinus C) Chrysichthys nigrodigitatus D) Gymnarchus niloticus
A) Absence of buffer system B) Microbial degradation C) Adequate photosynthesis D) Supplementary feeding
A) Milligram per litre B) Percentage saturation C) Centimetre D) Parts per million
A) 60cm B) 5ppm C) 20mg/l D) 110%
A) Plastic pond B) Recirculatory pond C) Earthen pond D) Concrete pond
A) Plastic pond B) Concrete pond C) Earthen point D) Recirculatory pond
A) The interaction of lives with the non living environment B) The number of lives it can support C) The types of lives present in it D) The nutrient content
A) Ration B) Forage C) Fish feed D) Compost
A) The are formulated/prepared B) They can be initiated through decomposition C) Examples are larvae and water lettus D) They are life and dead foods
A) Necton B) Detritus C) Benthos D) Plankton
A) The behaviour and the number B) The nutrient and the size C) The species and the habitat D) The type and the amount
A) Groundnut cake B) Fish meal C) Wheat middling D) Rumen content
A) Wastage B) Floating ability C) Disatisfaction D) Sinking ability
A) Feeding fish with certain mass of its body weight B) Feeding fish with certain mass to achieve a known body weight C) Feeding fish to compensate for over stocking D) Feeding fish with certain mass for a period of time
A) None B) Water temperature C) Natural food D) Stocking rate
A) Natural food B) Phytoplankton C) Artificial feed D) Zooplankton
A) Mill B) Pellet C) Mash D) Syrup
A) Beneficial bacteria are killed B) It smothers fish eggs C) Aquatic habitat turns land habitat D) It increases light penetration
A) Cytoplasm B) Ribosome C) Mitochondrion D) Chroloplast
A) Fish metabolism B) Fish size C) None D) Water temperature
A) 2.3ppm B) 1.3ppm C) 2.5ppm D) 1.5ppm
A) 4-6.5 B) 6-8 C) 6.5-9 D) 9-10.5
A) Concrete B) Excavated C) Earthen D) Embarkment
A) 750 B) 500 C) 250 D) 1000
A) Lake B) Stream C) Well D) Bore hole
A) Reservoir B) Dike C) Core trench D) Dam
A) Spill way B) Ditch C) Out let D) In let
A) Regulation of pH B) Enriching the pond C) Water retention D) Sealing of leakage
A) Draining-checking cracks-liming-fertilization B) Draining- fertilization-liming-impoundment C) Removing silt-checking cracks-liming-fertilization D) Draining-impoundment-liming-stocking
A) Dam B) Trench C) Dike D) Spillway
A) 5% B) 3% C) 4.5% D) 2% |