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