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