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