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