A) Dissolved oxygen B) Temperature C) Photosynthesis D) Respiration
A) Eutrophication B) Decomposition C) Respiration D) Ration
A) Clay particles B) Fish feed C) Fertilizers D) Fish waste
A) 18F B) 2ppm C) 70% D) 20g/l
A) Carbonate ion B) Bicarbonate ion C) Hydroxyl ion D) Hydrogen ion
A) Build up of carbondioxied B) Absence of photosynthesis C) Need of buffering system D) Lethal increase in pH
A) Alkalinity and hardness B) Temperature and dissolved oxygen C) Photosynthesis and respiration D) Turbidity and pH
A) Soya bean cake B) Sugar cane bagass C) Biological covers D) Rice molass
A) Necton B) Benthos C) Plankton D) Detritus
A) 20ppm hardness B) A water transparency of 60cm C) 110% saturated total ammonia D) 3mlphytoplankton/ 100l of pond water
A) Complete feed B) Supplementary feed C) Fish D) Natural food
A) 30% B) 10% C) 50% D) 15%
A) Improve nutrient loss by leaching B) Discourage uniformity in fish size C) Reduce dissolved oxygen consumption of fish D) Encourage food wastage
A) At selected pond area B) On entire pond area C) Neither D) Either
A) 0.5 difference B) 1:2:4 C) 1:2:1 D) 25%
A) 25% B) 70% C) 4% D) 50%
A) Disallowing run off into the fish pond B) High water holding capacity C) Good water drainage D) Avoiding soil erosion
A) Microbial degradation B) Adequate photosynthesis C) Supplementary feeding D) Absence of buffer system
A) Parts per million B) Percentage saturation C) Milligram per litre D) Centimetre
A) 110% B) 20mg/l C) 5ppm D) 60cm
A) Earthen pond B) Plastic pond C) Recirculatory pond D) Concrete pond
A) Earthen point B) Plastic pond C) Concrete pond D) Recirculatory pond
A) The types of lives present in it B) The number of lives it can support C) The nutrient content D) The interaction of lives with the non living environment
A) Fish feed B) Ration C) Compost D) Forage
A) They are life and dead foods B) Examples are larvae and water lettus C) The are formulated/prepared D) They can be initiated through decomposition
A) Plankton B) Detritus C) Necton D) Benthos
A) The behaviour and the number B) The type and the amount C) The species and the habitat D) The nutrient and the size
A) Wheat middling B) Fish meal C) Groundnut cake D) Rumen content
A) Disatisfaction B) Sinking ability C) Wastage D) Floating ability
A) Feeding fish with certain mass of its body weight B) Feeding fish to compensate for over stocking C) Feeding fish with certain mass for a period of time D) Feeding fish with certain mass to achieve a known body weight |