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Strategies for Enhancement in Food Production Test - 76

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Strategies for Enhancement in Food Production Test - 76
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Important objective of biotechnology in agriculture section is
    Solution
    Biotechnology is being used to address problems in all areas of agricultural production and processing. This includes plant breeding to raise and stabilize yields; to improve resistance to pests, diseases and abiotic stresses such as drought and cold; and to enhance the nutritional content of foods. Biotechnology is being used to develop low-cost, disease-free planting materials for crops.
  • Question 2
    1 / -0
    Which among the following is the real product of honey bee?
    Solution
    Bee wax is a natural secretion from wax glands on the sides of the body of honey bees and is used primarily as a building block for the bees' honeycomb cells in which the young are raised and honey and pollen are stored. The uses of beeswax are found in numerous products, including skin care products, candles, furniture polish, batik-making, etc.
  • Question 3
    1 / -0
    Honey bee after discovering the new source of nector / honey can convey the direction
    Solution
    The honey bees exhibit 2 types of dance to communicate the location of food - the round dance and the tail-wagging or waggle dance.
    The round dance is used for food sources 25-100 meters away from the hive or closer. After distributing some of her new-found nectar to waiting bees the scout will begin running in a small circle, switching direction every so often. The round dance does not give directional information. Bees elicited into foraging after a round dance fly out of the hive in all directions searching for the food source they know must be there.
    As the food source becomes more distant the round dance is replaced by the waggle dance. The waggle dance includes information about the direction and energy required to fly to the goal.  Hence option B is correct.
  • Question 4
    1 / -0
    Potato got resistance to Phytopthora infestans from
    Solution
    Late blight caused by the oomycete, Phytophthora infestans is the most destructive disease in potato cultivation worldwide. New, more virulent P. infestans strains have evolved which overcome the genetic resistance that has been introgressed by conventional breeding from wild potato species into commercial varieties. R genes (for single-gene resistance) and genes for quantitative resistance to late blight are present in the germplasm of wild and cultivated potato. The species Solanum demissum proved to be an important source of resistance, and by conventional plant breeding (crossing and back-crossing) in the 1940s and 1950s this resistance was bred into commercial potato cultivars. Four major resistant genes (termed R genes) were discovered and were introduced successively into commercial cultivars. Thus, the correct answer is option A.
  • Question 5
    1 / -0
    Maximum fat contents are present in the meat of ............
    Solution
    Beef meat are so diffusely saturated with fat that they cannot be trimmed to produce lean meat. Mutton and lamb are also fat meats, and the fat in them is at least as highly saturated as in beef or pork. Goat meat is actually lower in calories, total fat, saturated fat, and cholesterol than not just lamb, pork and beef meats. Chicken meat contains much less fat, especially if the birds are young. The white meat is particularly lean, but even the dark meat is not very fatty. Moreover, chicken fat is much less fully saturated than the fat of the more common meat mammals. It can be eaten in reasonably generous amounts without unduly raising the blood cholesterol.
  • Question 6
    1 / -0
    If the source is opposite to the direction of sun and distance is more than 75 meters then honey bee will convey the direction by
    Solution
    If the new source of food is farther from the hive than 75-100 meters, the returned scout performs a dance which follows a figure-eight course while the abdomen is being wagged or laterally vibrated (upright down tail waving dance). The dancer's speed is a function of the nearness of the supply. In a quarter minute she executes 9 to 10 full figures if she has flown in from only 100 meters. 
    Therefore, the correct answer is option B.
  • Question 7
    1 / -0
    Breeding of crops with high levels of minerals, vitamins and proteins is called
    Solution
    Correct option: C
    Explanation:

    • Biofortification is the technique of breeding crops to increase their nutritional value. 
    • This can be done either through conventional selective breeding or through genetic engineering. 
    • It differs from ordinary fortification because it focuses on making plant foods more nutritious as the plants are growing, rather than having nutrients added to the foods when they are being processed. 
    • Examples of biofortification projects include iron-biofortification of rice, beans, sweet potato, cassava, and legumes; zinc-biofortification of wheat, rice, beans, sweet potato, and maize, etc.

  • Question 8
    1 / -0
    Which of the following statement is correct?
    Solution
    1st statement is incorrect as Apis dorsata laboriosa and not Apis indica, the Himalayan honey bee, is the world's largest honey bee.
    2nd statement is incorrect as bees wax is not a waste material, it is secreted by special wax glands present in the abdomen. It is used for making the hives of honeybee.
    3rd statement is correct as Karl Von Frisch discovered the transmission methods in the honey bee during a number of experiments and found out that when a foraging bee returns to the hive, it performs a waggle dance. 
    4th statement is incorrect as drones of the honey bee are haploid and not diplod. They develop parthenogenetically from unfertilized eggs.
    Therefore, the correct answer is option C.
  • Question 9
    1 / -0
    Which one of the following is the indigenous breed of chickens ?
    Solution
    Aseel is a pure indigenous breed of chicken originated from India and Pakistan. They are used for cock fighting. They are very large breed of chicken from subcontinents. This breed is good in high yield of meat but it is not good for egg production. The average weight of cock varies from 4 to 5 kg and hens 3 to 4 kg. 
  • Question 10
    1 / -0
    Streptomycin resistance gene is transferred from Nicotiana tabacum to Nicotiana silvestrise by which of the following methods?
    Solution
    Fusion of the whole cell with the cytoplast or protoplast produces a hybrid cell called as cybrid and this process of fusion is called as cybridization. In cybridization, heterozygosity of extra-chromosomal material can be obtained, which has direct application in plant breeding. So, streptomycin resistance gene is transferred from Nicotiana tabacum to Nicotiana silvestris by cybridization and not by somatic embryogenesis, embryo culture and somatic hybridization. Thus, the correct answer is option C.
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