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