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