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Strategies for Enhancement in Food Production Test - 79

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Strategies for Enhancement in Food Production Test - 79
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  • Question 1
    1 / -0
    Which of the following is the environmental impacts of animal agriculture?
    Solution
    • Animal agriculture is responsible for 20%-33% of all freshwater consumption in the world today. Animal agriculture is the leading cause of species extinction, ocean dead zones, water pollution, and habitat destruction. 
    • Animal agriculture contributes to species extinction in many ways. In addition to the monumental habitat destruction caused by clearing forests and converting land to grow feed crops and for animal grazing, predators and "competition" species are frequently targeted and hunted because of a perceived threat to livestock profits. 
    • The widespread use of pesticides, herbicides and chemical fertilizers used in the production of feed crops often interferes with the reproductive systems of animals and poison waterways. 
    • Animal agriculture is responsible for up to 91% of Amazon destruction. 

    Therefore, the correct answer is option D.
  • Question 2
    1 / -0
    Match the following.
    List IList II
    1.Apis cerena Indicaa. African bee
    2.Apis mellifera             b. Indian bee
    3.Apis adamsonic. Italian bee
    Solution
    Apis cerana indica, the Indian honeybee or Eastern honeybee, is a subspecies of the honey bee.
    The western honey bee or European honey bee is a species of honey bee. The genus name Apis mellifera.
    Apis adamsoni is known as African bee.
    Thus, the correct answer is option A.
  • Question 3
    1 / -0
    The major component of honey is 
    Solution
    The composition of honey showing the percentage of its various components are as follows:
    (i) Fructose or levulose = 38.19%
    (ii) Glucose = 31%
    (iii) Water = 17.20%
    (iv) Maltose = 7.2%
    (v) Higher carbohydrates and other sugars, like sucrose = 3.2%
    (viEnzyme pigment = 2.21%
    Thus, the major component of honey is fructose or levulose.
    Therefore, the correct answer is option D.
  • Question 4
    1 / -0
    Micropropagation means
    Solution
    Micropropagation is a tissue culture technique for plant propagation in which tissue is taken from a plant and grown in a laboratory to produce plants that are genetically identical to the parent. The small portion of plant tissue, sometimes only a single cell, is placed on a growth medium, typically containing sucrose as an energy source.
    Therefore, the correct answer is option C.
  • Question 5
    1 / -0
    Study the following lists:
    List-IList-II
    (A) Turrill(I) Tissue culture
    (B) Goethe(II) Pollen grains
    (III) Nucleosomes
    (C) Salisbury(IV) Flower-a modified strem
    (D) Oudet(V) Stomatal index
    Solution
    Stomatal index is a term introduced by Salisbury in 1927 and relates to the number of stomata per unit leaf area to the number of epidermal cells and guard cells per unit leaf area.
    Gotlieb Haberlandt is the Austrian botanist is the pioneer of plant tissue culture.
    Oudet studied the linker histone dependent DNA structure in a linear mononucleosome.
    The study of pollen grains and palynology its classification and nomenclature was studied by Turrill.
    Therefore, the correct answer is option C.
  • Question 6
    1 / -0
    Pisciculture is roaring and production of 
    Solution
    The process of breeding and rearing fish through artificial means  using commercial tanks or enclosures is called pisciculture. Such fish farming methods are also the principal form of aquaculture.
  • Question 7
    1 / -0
    Basic principle of developing transgenic plants and animals is to introduce the gene of interest into the nucleus of
    Solution
    Transgenic plants and animals are formed by introducing an exogenous gene called a trans gene so that the organism will exhibit a new property and transmit that property to its offspring. It is only possible when the gene of interest is introduced into the nucleus of germ cells as these are the embryonic cell with the potential of developing into a gamete thus passing on to next generation. Hence, the correct option is C.
  • Question 8
    1 / -0
    Honey has the largest percentage of
    Solution
    Honey gets its sweetness from the monosaccharides fructose and glucose, and has about the same relative sweetness as granulated sugar. At room temperature, honey is a supercooled liquid, in which the glucose will precipitate into solid granules. This forms a semisolid solution of precipitated glucose crystals in a solution of fructose and other ingredients. The percentage of glucose is higher than fructose in honey.
  • Question 9
    1 / -0
    In honey the percentage of maltose and other sugar is
    Solution
    Honey is mainly consists of fructose (about 38-55%) and glucose (about 31%), with remaining sugars including maltose, sucrose and other complex carbohydrates. Maltose, sucrose and other sugars accounts for 8.81%.
  • Question 10
    1 / -0
    A colony of honey bees affected by CCD (note the small number of adult workers relative to a large amount of unhatched brood that forms the waxy cells in the hive frame. Frames 1 and 3 are most greatly affected).
    In 2007, a significant proportion of American beekeepers complained of unusually large losses of bee populations from their overwintering levels in late 2006. Loss of some colonies (approximately 10%) in early spring is normal and occurs every year. The problem was also reported by beekeepers in Europe, and researchers do not understand the specific causes of these losses.
    At present, the syndrome is mysterious given that the main symptom is simply a low number of adult bees in the hive. There are no dead bodies and despite the fact that the affected colonies do co-exist with many disease organisms, no external signs of disease, pests or parasites seem to exist.
    Both ranchers and commercial honey producers treat livestock and bees with a cocktail of drugs and pesticides to keep them healthy and to ensure the economic success of their operations. Bees are frequently targeted by the insect Varroa destructor, a brood parasite. Varroa has developed resistance to Apistan (containing the synthetic chemical fluvalinate) shortly after being exposed to it. The resistance is linked to a gene carried by the parasite.
    Which of the following would be the most likely effect on Varroa resistance to a new and chemically different compound called Amitraz?

    Solution
    A- Option B, C & D, all speak about the transmission of Apistan & Amitraz-resistance gene affecting the Varroa while Option A speaks about the disappearance of gene for Apistan-resistance from Varroa population within a few generations thus, having a impact on Varroa resistance to Amitraz. 
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