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