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