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