Certificate In Bio Flock Fish Farming /30 0 Your Examination is Complete ! Certificate In Bio Flock Fish FarmingOnline Examination Detail: Duration- 60 minutes. Number of Questions- 30. (Multiple Choice Questions). Maximum Marks- 100, Passing Marks- 40%. There is no negative marking. Candidate Details NameEmailPhone Number 1 / 301. Culture of fish in marine water is called. A. Freshwater fish culture B. Brackish water fish culture C. Mariculture D. None of these 2 / 302. What is the importance of water treatment systems in bioflock technology? A. To maintain water quality in the culture tanks B. To remove settled solids from the water in the culture tanks C. To provide the aquatic organisms with food D. To control the temperature of the water in the culture tanks 3 / 303. What is the role of phytoplankton in biofloc systems? A. To control the pH of the culture tanks B. To provide additional nutrients for the aquatic organisms C. To compete with heterotrophic bacteria for nutrients D. To break down organic matter and convert it into microbial biomass 4 / 304. Which of the following is a benefit of using biofloc technology in shrimp farming? A. Reduced incidence of disease B. Increased reliance on antibiotics C. Reduced energy costs D. Increased need for chemical fertilizers 5 / 305. Which is purely a capture type of fishery- A. Marine fishery B. Inland fishery C. Culture fishery D. Aquaculture 6 / 306. What is the typical dissolved oxygen level in biofloc culture tanks? A. Less than 1 mg/L B. 1-3 mg/L C. 3-5 mg/L D. Greater than 5 mg/L 7 / 307. Single species is cultured in ________ system. A. Polyculture B. Mixed culture C. Monoculture D. All of these 8 / 308. What is the role of aeration in biofloc culture tanks? A. To distribute oxygen throughout the water B. To control the temperature of the water C. To promote the growth of beneficial bacteria D. To remove contaminants from the water 9 / 309. What is bioflock technology? A. A method of growing plants in water B. A method of aquaculture that uses microbial communities to convert waste into nutrients for aquatic organisms. C. A method of growing algae in water D. A method of fish farming that uses artificial light to enhance growth 10 / 3010. What is the purpose of using paddlewheels in biofloc culture tanks? A. To mix the water and promote microbial growth B. To control the temperature of the water C. To distribute oxygen throughout the water D. To remove contaminants from the water 11 / 3011. What is the function of biofilter systems in bioflock technology? A. To remove settled solids from the water in the culture tanks B. To maintain water quality in the culture tanks C. To provide the aquatic organisms with food D. To control the temperature of the water in the culture tanks 12 / 3012. What is the primary benefit of using biofloc technology in aquaculture? A. Increased yield B. Improved taste of the fish or shrimp C. Reduced cost of production D. Reduced water usage 13 / 3013. What is the primary factor that determines the size of biofloc particles? A. Water temperature B. Nutrient concentration C. Aeration rate D. Water flow rate 14 / 3014. What is the typical size range of biofloc particles? A. 1-10 microns B. 10-100 microns C. 100-1000 microns D. 1000-10,000 microns 15 / 3015. What is the primary source of nitrogen in biofloc systems? A. Ammonia B. Nitrate C. Nitrite D. Organic matter 16 / 3016. Which of the following is called as Indian major carp? A. Catla B. Common carp C. Mrigal D. Both (a) and (c) 17 / 3017. Fish flour is rich in- A. Fat B. Protein C. Vitamins D. Minerals 18 / 3018. What is the purpose of aeration systems in bioflock technology? A. To maintain the temperature of the water in the culture tanks B. To remove contaminants from the water in the culture tanks C. To maintain oxygen levels in the culture tanks D. To provide the aquatic organisms with food 19 / 3019. Which of the following is a common type of biofloc reactor? A. Stirred-tank reactor B. Membrane reactor C. Bioreactor D. Photobioreactor 20 / 3020. Which of the following is a factor that can affect the quality of biofloc? A. Water temperature B. Amount of sunlight C. Nutrient concentration D. All of the above 21 / 3021. What is the primary benefit of using biofloc technology in fish farming? A. Improved growth rates B. Reduced incidence of disease C. Improved water quality D. Increased reliance on antibiotics 22 / 3022. What is the purpose of settling tanks in bioflock technology? A. To remove contaminants from the water in the culture tanks B. To maintain water quality in the culture tanks C. To maintain oxygen levels in the culture tanks D. To remove settled solids from the water in the culture tanks 23 / 3023. What is the ideal carbon-to-nitrogen ratio for biofloc systems? A. 5:1 B. 10:1 C. 15:1 D. 20:1 24 / 3024. Crustacean fishery is connected with exploitation of- A. Oysters and Crabs B. Lobster and Prawn C. Mussels and Squids D. Shells and Cuttle fish 25 / 3025. ______ is the objective of fish culture. A. Utilization of water resource B. Utilization of barren land C. Production of protein rich food D. All of the above 26 / 3026. Cultivation of fishes in artificially prepared ponds or water bodies is called… A. Aquaculture B. Vermiculture C. Agriculture D. Pisciculture 27 / 3027. Indian major carp’s breeds in _______ season. A. Monsoon B. Winter C. Summer D. All of the above 28 / 3028. What is the role of probiotics in biofloc technology? A. To provide additional nutrients for the aquatic organisms B. To control the pH of the culture tanks C. To enhance the growth of beneficial microbial communities D. To reduce the need for water treatment systems 29 / 3029. Which of the following is a disadvantage of using biofloc technology? A. Increased reliance on antibiotics B. Higher energy costs C. Increased use of chemical fertilizers D. Higher water usage 30 / 3030. Which of the following is not a marine fish A. Bombay Duck B. Pomfret C. Labeo D. Mackerel Exit
