A) Need of buffering system B) Build up of carbondioxied C) Absence of photosynthesis D) Lethal increase in pH
A) Temperature and dissolved oxygen B) Alkalinity and hardness C) Photosynthesis and respiration D) Turbidity and pH
A) Biological covers B) Soya bean cake C) Rice molass D) Sugar cane bagass
A) Plankton B) Detritus C) Necton D) Benthos
A) 20ppm hardness B) 3mlphytoplankton/ 100l of pond water C) 110% saturated total ammonia D) A water transparency of 60cm
A) Complete feed B) Fish C) Natural food D) Supplementary feed
A) 30% B) 10% C) 15% D) 50%
A) Encourage food wastage B) Improve nutrient loss by leaching 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) 0.5 difference C) 1:2:4 D) 1:2:1
A) 50% B) 70% C) 4% D) 25%
A) Disallowing run off into the fish pond B) Good water drainage C) High water holding capacity D) Avoiding soil erosion
A) Fencing of pond area B) Nearness to market C) Detailed survey of site D) Fast growing species
A) 5cm and 7.5cm B) 7.5cm-5cm C) 5cm and 7.5-10cm D) 7.5-10cm and 5cm
A) Dam B) Monk C) Ditch D) Spillway
A) Concrete pond B) Recirculatory pond C) Earthen point D) Plastic pond
A) The types of lives present in it B) The interaction of lives with the non living environment C) The number of lives it can support D) The nutrient content
A) Fish feed B) Ration C) Forage D) Compost
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) Detritus B) Benthos 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) Wheat middling B) Rumen content C) Fish meal D) Groundnut cake
A) Sinking ability B) Floating ability C) Disatisfaction D) Wastage
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) Stocking rate B) Water temperature C) Natural food D) None
A) Phytoplankton B) Zooplankton C) Natural food D) Artificial feed
A) Pellet B) Mash C) Mill 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) Cytoplasm C) Ribosome D) Mitochondrion
A) Fish size B) Fish metabolism C) None D) Water temperature |