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