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. 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 2 / 302. What is the primary source of nitrogen in biofloc systems? A. Ammonia B. Nitrate C. Nitrite D. Organic matter 3 / 303. Which is purely a capture type of fishery- A. Marine fishery B. Inland fishery C. Culture fishery D. Aquaculture 4 / 304. 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 5 / 305. 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 6 / 306. Which of the following is not a marine fish A. Bombay Duck B. Pomfret C. Labeo D. Mackerel 7 / 307. 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 8 / 308. 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 9 / 309. 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 10 / 3010. Cultivation of fishes in artificially prepared ponds or water bodies is called… A. Aquaculture B. Vermiculture C. Agriculture D. Pisciculture 11 / 3011. 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 12 / 3012. Culture of fish in marine water is called. A. Freshwater fish culture B. Brackish water fish culture C. Mariculture D. None of these 13 / 3013. 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 14 / 3014. Single species is cultured in ________ system. A. Polyculture B. Mixed culture C. Monoculture D. All of these 15 / 3015. Which of the following is a common type of biofloc reactor? A. Stirred-tank reactor B. Membrane reactor C. Bioreactor D. Photobioreactor 16 / 3016. What is the ideal carbon-to-nitrogen ratio for biofloc systems? A. 5:1 B. 10:1 C. 15:1 D. 20:1 17 / 3017. Indian major carp’s breeds in _______ season. A. Monsoon B. Winter C. Summer D. All of the above 18 / 3018. 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 19 / 3019. 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 20 / 3020. Fish flour is rich in- A. Fat B. Protein C. Vitamins D. Minerals 21 / 3021. 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 22 / 3022. 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 23 / 3023. Which of the following is called as Indian major carp? A. Catla B. Common carp C. Mrigal D. Both (a) and (c) 24 / 3024. 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 25 / 3025. Crustacean fishery is connected with exploitation of- A. Oysters and Crabs B. Lobster and Prawn C. Mussels and Squids D. Shells and Cuttle fish 26 / 3026. 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 27 / 3027. 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 28 / 3028. 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 29 / 3029. 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 30 / 3030. ______ 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 Exit
