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