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Strategies for Enhancement in Food Production Test - 78

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Strategies for Enhancement in Food Production Test - 78
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  • Question 1
    1 / -0
    Explant is required to be disinfected before placing in culture. This is done by
    Solution
    Autoclaving is the technique to kill the germs by exposure to steam under high pressure and is used to sterilize the culture media and apparatus. 
    Ultra-violet rays are used for sterilisation of culture media is an expensive method and mostly spoils plastic apparatus. 
    X-rays treatment is used for deactivation of protoplast to make them serve as a donor of cytoplasmic genophores for cybrid production. 
    Autoclave, UV rays and X-rays are lethal to living plant tissues and thus are not used for explant sterilisation. 
    Hypochlorite -, sodium  hypochlorite is used for sterilizing plant structures, where in the plant parts are immersed in a very dilute solution for about 15-20 minutes
    So, the correct answer is option C.
  • Question 2
    1 / -0
    Life span of worker bee is of ................
    Solution
    Workers bee are the smallest castes. The lifespan of an adult worker bee varies with the time of the year. It takes about twenty-one days in their development from egg to adult and When the colony is active in spring and summer, worker bee may live as long as 5-6 weeks. During the inactive period in winter a worker bee lives five months or more.
    So, the correct answer is '6 weeks'.
  • Question 3
    1 / -0
    Sometimes urea is fed to ruminants to improve their health. It works by
    Solution
    The urea supplementation program aims to improve the rumen function and animal performance. It works by helping the growth of gut microflora that will help in breaking down of cellulose
    So, the correct answer is 'Helping growth of gut microbes that break down cellulose'
  • Question 4
    1 / -0
    Cattle fed with spoilt hay of sweet clover which contains dicumarol ..........................
    Solution
    Sweet clover poisoning is caused when feeding moldy sweet-clover hay or silage that contains dicoumarol. Dicoumarol is a toxic compound that is produced through weathering of a normal component of sweet clover called coumarol. It is the dicoumarol that causes the sweet clover poisoning, preventing normal blood clotting and causing extensive hemorrhaging. When sweet clover becomes spoiled or is improperly cured the coumarol is converted to the toxic substance dicoumarol. This toxin interferes with the metabolism and synthesis of vitamin K. 
    Vitamin K is essential for liver function, necessary to prevent the seepage of blood from the circulatory system and to establish blood clotting. Without vitamin K, the blood will not clot properly after an injury, and this is why sweet clover poisoning is also called sweet clover bleeding disease.
  • Question 5
    1 / -0
    In poultry industry, production of hatching eggs is more expensive than the production of market eggs mainly because
    Solution
    In the poultry industry, production of hatching egg is more expensive because it requires optimum temperature fo incubation. But the major factor is the weight of the hatching egg and chick weight. Under optimal egg storage and incubation conditions, chick weight is 67-69 per cent of egg weight at setting. Therefore, the more uniform the egg weight, the more uniform the chick weight. Breeder uniformity determines uniformity in the hatching eggs produced; the more uniform the breeder flock, the more uniform the egg weights. Hence, some of the eggs produced by hatchery flocks are not acceptable for incubation and is rejected. So, the production of hatching eggs is more expensive than the production of market eggs.
  • Question 6
    1 / -0
    What is micropropagation?
    Solution
    A.Correct option -B

    B.Explanation for correct option -B
    ●Micropropagation is the artificial process of producing plants vegetatively through tissue culture or cell culture techniques.
    ●Artificial process of propagation, plants are produced in vitro by asexual means of reproduction or by vegetative propagation.
  • Question 7
    1 / -0
    A clone is a group of individuals obtained through______________
    Solution
    • Cells derived from a single cell through mitosis constitute a clone and the process of obtaining clones is called cloning (asexual progeny of a single individual make up a clone). 
    • Plant tissue culture or micropropagation is the technique of maintaining and growing plant cells, tissues or organs especially on artificial medium in suitable containers under controlled environmental conditions.

    Therefore, the correct answer is option D.
  • Question 8
    1 / -0
    Consider the statements A-D.
    A. Production of plants in an artificial synthetic medium is known as micro propagation.
    B. Callus is the cellular mass of tissue developed in the early stage of tissue culture.
    C. Orchids, dahlia and carnation plants are raised by means of micropropagation.
    D. Air layering (gootee) is practised in grape, rose, raspberry and strawberry plants.
    The correct statements are given in
    Solution
    • Micropropagation is a more recent practice for growing plants in a culture medium by providing them with all the necessary nutrients and inducing their growth artificially. So, statement A is correct.
    • In the case of growth of plants through asexual means using tissue culture, first of all, the mass of cells is formed which is then differentiated into different cells and forms the entire plant body. This cell mass is called callus. So, statement B is also correct.
    • Examples of micropropagation growth include orchids, dahlia, etc. So, the statement C is also correct.
    Examples of Gootee include lychee, pili nut, jack fruit, etc.
    So, statement D is incorrect.
  • Question 9
    1 / -0
    Which one of the following is not a draught animal?
    Solution
    Draught animals are strong working animals used to draw a loaded cart, a plow etc. Several animals including camels, donkeys, horses, logging elephants and dogs are used for transport, either riding or to pull wagons and sleds. Draught animal power is important for increased productivity of land and labour and therefore to sustainable agricultural production in low input system. 
  • Question 10
    1 / -0
    Cloning is obtained through
    Solution
    Micropropagation is the method of large production of plantlets in a less time. In this method, a small piece of plant tissue (explant) is cultured in a sterile medium which later develops into new plantlets. The offsprings produced by this methods are the exact copy of their parent plant and are known as somaclones. So, the technique of micropropagation is also known as cloning.
    Thus, the correct answer is option D. 
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