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