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