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