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