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