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