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