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Strategies for Enhancement in Food Production Test - 19

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Strategies for Enhancement in Food Production Test - 19
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  • Question 1
    1 / -0
    Single cell proteins are
    Solution
    • The cells are from a variety of microorganisms such as bacteria, yeasts, filamentous fungi, and algae that are used as food or feed are called single-cell proteins (SCP). e.g. Spirulina (algae) and Chlorella.

    So, the correct answer is option D.
  • Question 2
    1 / -0
    Pure line breeds refer to
  • Question 3
    1 / -0
    Which of the following step is the backbone of plant breeding programme?
    Solution
    The products of cross-hybridization (hybrid plants) are usually more vigorous and faster growing than other plants, they are disease resistant, stress-resistant etc, thus, by doing cross-hybridization in plant breeding, the average production of crops improved which leads to Green Revolution. Thus, the correct answer is 'Cross hybridization'. 
  • Question 4
    1 / -0
    The quickest method of plant breeding is
    Solution
    The correct answer is mutation breeding:
    Plant breeding is the technique used to improve the variety of plants for human welfare. Introduction, selection, hybridization and mutation breeding are the main methods of crop improvement along with polyploid breeding, tissue culture and genetic engineering. Introduction is the process of introducing new plants from their old locality to the new one. Selection is the oldest method of plant improvement in which suitable varieties are selected. It is of two types-natural and artificial. Hybridization is the production of new varieties by crossing two or more plants having different genetical constitution. Mutation breeding is a quick way to introduce sudden changes in the genome of the plant.
  • Question 5
    1 / -0
    A collection of plants and seeds having diverse alleles of all the genes of a crop is
    Solution
    Collection of plants or seeds having diverse alleles of all the genes of a crop is known as germplasm collection. It is an example of ex-situ conservation of biodiversity. Ex-situ conservation is done by preserving the components of biological diversity outside their natural habitats. It is done by conserving genetic resources, as well as wild and cultivated or species. Examples include Gene banks, Microbial cultures, Cryopreservation, etc.
    So, the correct answer is 'Germplasm'.
  • Question 6
    1 / -0
    Germplasm collection is
    Solution
    Collection of plants or seeds having diverse alleles of all the genes of a crop is known as germplasm collection. It is an example of ex-situ conservation of biodiversity. Ex-situ conservation is done by preserving the components of biological diversity outside their natural habitats. It is done by conserving genetic resources, as well as wild and cultivated or species. Examples include Gene banks, Microbial cultures, Cryopreservation, etc.
    So, the correct answer is 'Collection of plants or seeds having diverse alleles of all the genes of a crop'.
  • Question 7
    1 / -0
    Selection is a method of
    Solution
    • In plant breeding, the selection is the most primitive and simplest method used for crop improvement.
    • Selection is sorting out the plants with desired characters. For example : High yield or disease resistance from plant population on the basis of homozygous characters and reproducing them under controlled conditions.
    • Plant physiology is a sub-discipline of botany concerned with the physical, chemical, and biological functioning of plants.
    • Genetics is the study of heredity, genes, and genetic variation in all organisms.
    • Cytology is the study of individual cells as fundamental units of living things. 

    So, the correct answer is 'Plant breeding'
  • Question 8
    1 / -0
    In biotechnological studies, the alga that is exploited as a rich source of protein is
    Solution
    Spirulina is a filamentous blue-green alga or cyanobacterium which is coiled shaped. It is grown commercially for food and feed.
    It is rich in proteins, vitamin B complex and minerals.
    It has a protein level which is higher than any other natural food source. It consists of 55-77% protein of its dry weight.
    The protein obtained from this alga is easily digestible and more suited to the human digestion than the animal protein so in biotechnology it is used as a rich source of protein for many applications such as powdered Spirulina is used in herbal tonics.
    So, the correct answer is B.
  • Question 9
    1 / -0
    Cellular totipotency was first demonstrated by
    Solution
    Cell potency is a cell's ability to differentiate into other cell types. Frederick Campion Steward was a British botanist and plant physiologist. He demonstrated that plant cells are totipotent, carrying the genetic information to enable them to develop into complete plants, often by embryogenesis. Thus, option A is correct. 
  • Question 10
    1 / -0
    Cultivation of fishes, oysters, shrimps and crabs come under _______.
    Solution
    • The cultivation of fishes, oysters, shrimps, and crabs comes under aquaculture. 
    • Sericulture is the culture and rearing of silkworms.
    • Silviculture is the practice of controlling the growth, composition/structure, and quality of forests to meet values and needs, specifically timber production.
    • Pisciculture is the culture of only fishes for commercial production.

    So, the correct answer is option B.
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