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