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