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