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