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