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