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