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