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