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