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