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