HR CHEM STUDY

14. Edible Cultivable Fishes of Rajasthan

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Solve Class 12 Agriculture Biology Chapter 14 MCQs and online test. Master Edible Fishes of Rajasthan VVI questions. 3-Level Challenge: Score 70% to unlock the next level!

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Dear students, a very warm welcome to this final, yet incredibly fascinating and opportunity-filled chapter of Agriculture Biology titled 'Edible Cultivable Fishes of Rajasthan'. Whenever we generally think about the great state of Rajasthan, the very first vivid image that naturally emerges in our minds is that of a vast, dry desert, towering golden sand dunes, and a severe, perpetual shortage of drinking water. However, do you actually know that in today's highly advanced modern era, with the tremendous help of cutting-edge technology and a progressive scientific approach, Pisciculture or large-scale fish farming has become a highly profitable and incredibly rapidly growing agricultural business even in this supposedly dry state of Rajasthan? This specific chapter beautifully explains to us in great detail about this astonishing transformation and the immense, untapped possibilities of commercial fish farming available in the region. Let us try to clearly understand this highly successful concept with a very direct and practical real-life example from our rural areas. You must have definitely seen various small and large ponds, anicuts, or newly constructed water dams built by the government in or around your local villages and towns. During the heavy monsoon season, when these massive water bodies are completely filled to the brim with fresh rainwater, many highly aware and progressive farmers, along with growing their regular field crops, intelligently release tiny fish seeds (which are locally known as 'Jeera' or scientifically as fingerlings) directly into these large ponds. Within just a span of a few short months, these tiny fish grow into large, fully mature adults and are subsequently sold at extremely high, premium prices in the local and national markets. Fishes are universally known to be an incredibly fantastic, highly digestible, and relatively cheap source of premium animal protein, which is exactly why there is a massive and ever-growing demand for them all across the entire world today. Doing this profitable work alongside traditional farming multiplies the poor farmers' overall income many times over, an excellent and highly sustainable practice which we broadly classify as Mixed Farming in agricultural science. In this extensively detailed and comprehensive chapter, we will conduct a very deep study specifically focusing on those special, highly resilient fish species that can be very easily and successfully cultured according to the specific dry climate and fluctuating water conditions of Rajasthan. These primarily and prominently include the major Indian carp fishes such as Rohu, Catla, Calbasu, Mrigala, and the famous Mahseer. We will thoroughly and scientifically understand the general physical introduction, the specific feeding habits, and the rapid growth rates of all these highly valuable fishes. Along with this, we will also engage in a very detailed discussion on the various modern scientific methods of commercial pisciculture. Learning exactly how fishes are strategically cultured based on stocking density and carefully managed based on compatible species combinations is the absolute most essential knowledge required to become a highly successful and wealthy fish farmer today. For ensuring a truly spectacular preparation for the upcoming NCERT and RBSE board exams in 2027, this chapter is exceptionally crucial and extremely high-scoring for all students. In your main board examinations, several highly important objective questions are absolutely guaranteed to be asked regarding the distinct physical characteristics of Rohu and Catla fishes, the vast future possibilities of fish farming specifically in Rajasthan, and the overall massive economic importance of the global pisciculture industry. You absolutely must memorize the exact scientific names of all these edible fishes and precisely remember their specific feeding zones or levels within the pond water (such as clearly distinguishing between surface feeders, middle column feeders, or bottom-dwelling fishes). To make this excellent preparation 100% robust and flawless, we have meticulously prepared a very high-quality online test right here on our 'HR CHEM STUDY' educational platform. Continually practicing these carefully selected VVI multiple-choice questions will quickly make all your complex concepts totally clear. This excellent online quiz will perfectly assist you in securing top marks. Feature: This is a unique 3-Level based quiz. To unlock the next levels (Level 2 and 3), students must score at least 70% marks in the current level, which makes their board exam preparation 100% stronger.

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рдЕрдзреНрдпрд╛рдп рдХреЗ рд╕рднреА рдкреНрд░рд╢реНрди (Revision Notes)

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  1. Scientific name for Fish Farming is:
    A) Apiculture  |  B) Pisciculture  |  C) Sericulture  |  D) Silviculture
  2. Rich nutrient in fish meat is:
    A) Carbohydrate  |  B) Protein  |  C) Fat  |  D) Salt
  3. Vitamins abundant in fish oil:
    A) Vitamin C  |  B) Vitamin A and D  |  C) Vitamin B  |  D) Vitamin K
  4. Feeding surface of Catla fish:
    A) Bottom  |  B) Surface feeder  |  C) Column  |  D) Anywhere
  5. Habitat of Mrigal fish:
    A) Surface  |  B) Bottom feeder  |  C) Column  |  D) In air
  6. Organ for Respiration in fish:
    A) Lungs  |  B) Gills  |  C) Skin  |  D) Nose
  7. Primary spawning (egg-laying) season:
    A) Winter  |  B) Monsoon  |  C) Summer  |  D) Autumn
  8. Highest fish production potential in Rajasthan is in:
    A) Jaisalmer  |  B) Banswara and Dungarpur  |  C) Bikaner  |  D) Churu
  9. Ideal pond water for fish farming:
    A) Dirty/toxic  |  B) Clean and well-oxygenated  |  C) Highly saline  |  D) Anoxic
  10. Scientific name of Rohu:
    A) Catla catla  |  B) Labeo rohita  |  C) Cirrhinus mrigala  |  D) None
  11. Main food of fish:
    A) Bread  |  B) Plankton  |  C) Grass  |  D) Soil
  12. Rearing multiple fish species in one pond:
    A) Monoculture  |  B) Composite fish culture  |  C) Dry culture  |  D) None
  13. Used to catch fish:
    A) Gun  |  B) Nets  |  C) Stick  |  D) Stone
  14. Body structure of Catla:
    A) Very thin  |  B) Broad with heavy head  |  C) Snake-like  |  D) Round
  15. Benefits of fish farming for farmers:
    A) Extra income  |  B) Employment  |  C) Nutritious food  |  D) All of the above
  16. Feeding level of 'Rohu' in composite culture:
    A) Surface  |  B) Column feeder (middle)  |  C) Bottom  |  D) None
  17. Ideal pH for fish farming pond:
    A) 4.0  |  B) 7.5 to 8.5 (lightly alkaline)  |  C) 12.0  |  D) 1.0
  18. Best time to release fish seeds (Spawn/Fry):
    A) 12 PM  |  B) Morning or Evening (cool time)  |  C) 2 AM  |  D) Heavy rain
  19. Medicinal use of Cod liver oil is for:
    A) Stomach ache  |  B) Eyesight and Rickets prevention  |  C) Fever  |  D) Cough
  20. Primary purpose of adding Lime to the pond:
    A) Color change  |  B) pH control and disinfection  |  C) Drying water  |  D) None
  21. Function of tail in fish:
    A) Breathing  |  B) Directional control while swimming  |  C) Grasping food  |  D) Seeing
  22. An example of Exotic Carp is:
    A) Rohu  |  B) Grass Carp or Silver Carp  |  C) Mrigal  |  D) Catla
  23. Transporting fish using:
    A) Plastic bags with oxygen  |  B) Open truck  |  C) Sack  |  D) None
  24. Issue with excessive aquatic weeds:
    A) Oxygen lack  |  B) Movement barrier  |  C) Nutrient depletion  |  D) All of the above
  25. Important fatty acid in fish meat:
    A) Omega-3  |  B) Palmitic  |  C) Stearic  |  D) None
  26. General depth of fish pond:
    A) 10m  |  B) 1.5 to 2.5 meters  |  C) 50m  |  D) 0.5m
  27. Weight gained by Catla in one year approx:
    A) 100g  |  B) 1 to 1.5 kg  |  C) 10kg  |  D) 50g
  28. Effect of adding cow dung to the pond:
    A) Increase salt  |  B) Natural food (Planktons) growth  |  C) Soil increase  |  D) Poisoning
  29. Post-harvest fish preservation via:
    A) Drying  |  B) Icing  |  C) Salting  |  D) All of the above
  30. Rajasthan 'Rajas-Sangh' scheme is for:
    A) Farming  |  B) Fishery for tribal development  |  C) Animal husbandry  |  D) Education
  31. Number of chambers in a fish heart:
    A) Four  |  B) Two (one auricle, one ventricle)  |  C) Three  |  D) One
  32. Injection given for Induced Breeding:
    A) Insulin  |  B) Pituitary extract  |  C) Thyroxine  |  D) Vitamin
  33. Primary food of Silver Carp:
    A) Grass  |  B) Phytoplankton  |  C) Fish  |  D) Soil
  34. Min Dissolved Oxygen (DO) required in pond:
    A) 1 ppm  |  B) 5 ppm or more  |  C) 0.1 ppm  |  D) 100 ppm
  35. Scientific name of Mahseer:
    A) Catla catla  |  B) Tor tor  |  C) Labeo  |  D) None
  36. Function of 'Scales' on fish body:
    A) Breathing  |  B) Protection  |  C) Swimming  |  D) Digestion
  37. Fish needing legal protection, famous as game fish:
    A) Rohu  |  B) Mahseer  |  C) Catla  |  D) Mrigal
  38. Ratio of Catla, Rohu, and Mrigal in composite culture:
    A) 1:1:1  |  B) 4:3:3  |  C) 8:1:1  |  D) None
  39. Primary symptom of 'Dropsy' disease in fish:
    A) Tail cutting  |  B) Water accumulation and bloating of belly  |  C) Red eyes  |  D) None
  40. Use of Grass Carp in pond:
    A) Killing fish  |  B) Biological control of aquatic weeds  |  C) Cleaning water  |  D) None
  41. Biological Value of fish meat is:
    A) 10%  |  B) Above 80%  |  C) 50%  |  D) 5%
  42. Why use Mahua oil cake in pond preparation?
    A) Manure  |  B) To kill unwanted wild fish  |  C) Sweeten water  |  D) None
  43. Stage between 'Egg' and 'Fry':
    A) Adult  |  B) Fingerling  |  C) Spawn  |  D) None
  44. Supplementary feed in pisciculture:
    A) Rice bran and mustard oil cake  |  B) Meat  |  C) Milk  |  D) Sugar
  45. Temperature regulation in fish:
    A) Constant  |  B) Cold-blooded (Poikilothermic)  |  C) Very hot  |  D) Zero
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