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