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