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