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