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