A) Absence of photosynthesis B) Lethal increase in pH C) Need of buffering system D) Build up of carbondioxied
A) Turbidity and pH B) Photosynthesis and respiration C) Temperature and dissolved oxygen D) Alkalinity and hardness
A) Biological covers B) Rice molass C) Sugar cane bagass D) Soya bean cake
A) Benthos B) Detritus C) Plankton D) Necton
A) 3mlphytoplankton/ 100l of pond water B) 110% saturated total ammonia C) 20ppm hardness D) A water transparency of 60cm
A) Complete feed B) Supplementary feed C) Fish D) Natural food
A) 10% B) 15% C) 50% D) 30%
A) Discourage uniformity in fish size B) Encourage food wastage C) Reduce dissolved oxygen consumption of fish D) Improve nutrient loss by leaching
A) At selected pond area B) On entire pond area C) Either D) Neither
A) 1:2:1 B) 1:2:4 C) 25% D) 0.5 difference
A) 50% B) 4% C) 25% D) 70%
A) Avoiding soil erosion B) Good water drainage C) Disallowing run off into the fish pond D) High water holding capacity
A) Nearness to market B) Detailed survey of site C) Fencing of pond area D) Fast growing species
A) 5cm and 7.5-10cm B) 7.5-10cm and 5cm C) 7.5cm-5cm D) 5cm and 7.5cm
A) Ditch B) Spillway C) Monk D) Dam
A) Concrete pond B) Earthen point C) Plastic pond D) Recirculatory pond
A) The interaction of lives with the non living environment B) The types of lives present in it C) The nutrient content D) The number of lives it can support
A) Fish feed B) Compost C) Ration D) Forage
A) They can be initiated through decomposition B) The are formulated/prepared C) They are life and dead foods D) Examples are larvae and water lettus
A) Detritus B) Benthos C) Necton D) Plankton
A) The type and the amount B) The nutrient and the size C) The behaviour and the number D) The species and the habitat
A) Wheat middling B) Rumen content C) Fish meal D) Groundnut cake
A) Sinking ability B) Wastage C) Floating ability D) Disatisfaction
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) Natural food B) None C) Water temperature D) Stocking rate
A) Phytoplankton B) Natural food C) Zooplankton D) Artificial feed
A) Mash B) Syrup C) Pellet D) Mill
A) Beneficial bacteria are killed B) It increases light penetration C) Aquatic habitat turns land habitat D) It smothers fish eggs
A) Ribosome B) Mitochondrion C) Cytoplasm D) Chroloplast
A) Fish size B) Water temperature C) None D) Fish metabolism |