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Strategies for Enhancement in Food Production Test - 39

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Strategies for Enhancement in Food Production Test - 39
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  • Question 1
    1 / -0
    Callus culture is useful for purposes like
    Solution
    Callus culture is useful for many purposes:
    1  Callus is the starting material for the suspension culture which cells are separated.
    2. It helps in the production of secondary plant products.
    3. It is useful for the synthesis of starting compounds that are subsequently modified to yield the desired product.
    4. It is the starting materials for vegetative propagation of plants.
  • Question 2
    1 / -0
    Scientific and commercial method of beekeeping for production of honey and wax is called as
    Solution
    The rearing of honey bee to obtain honey and other commercially important products is known as apiculture. Honey and bee wax are two chief products of the beekeeping industry. Besides these also provide royal jelly, venom, pollen, etc. 
    Thus option A is the correct answer. 
  • Question 3
    1 / -0
    What is a callus in plant tissue culture?
    Solution
    Callus in plant tissue culture is a mass of undifferentiated cells that has developed from stems cells or meristematic cells isolated from a apical meristem of plant.
    So the correct answer is "None of the above".
  • Question 4
    1 / -0
    Most plant tissue cultures are initiated from
    Solution
    The tissue obtained from a plant to be cultured is called an explant. Explants can be taken from different many parts of a plant, including portions of shoots, leaves, stems, flowers, roots, single undifferentiated cells and from many types of mature cells provided are they still contain living cytoplasm and nuclei and are able de-differentiate and resume cell division. This has given rise to the concept of totipotentency of plant cells. So, the correct answer is 'Explants'.
  • Question 5
    1 / -0
    The part of plant used for culturing is called ___________.
    Solution
    Explanation: In biology, explant culture is a technique used for the isolation of cells from a piece or pieces of tissue. Tissue harvested in this manner is called an explant. It can be a portion of the shoot, leaves, or some cells from a plant, or can be any part of the tissue from an animal, or from umblical cord tissue.
  • Question 6
    1 / -0
    Which is not applicable to the biological species concept?
    Solution
    • The biological species concept defines a species as a member of populations that potentially interbreed in nature. 
    • The biological species concept explains species resemblance and how some differ from other species. 
    • Offspring has the fusion of parent's genes. As the generation increases, the genes of different organisms are constantly shuffled around the species gene pool. 
    • The shared gene pool gives the species its identity. 
    • Genes are not transferred to other species and different species thus, take on a different phenotype. 
    • Interbreeding between species is prevented by isolating mechanisms. The biological species concept centers on this inability to successfully hybridize.
    So, the correct answer is 'Hybridization'
  • Question 7
    1 / -0
    Honey bee is regarded as a social insect, because
    Solution
    • The honey bee represents only a small percent of the whole bee species ever through it is one of the most popular bees.
    It is the only surviving group of bees from Apini tribe, which comes under Apis genue.
    • They are known for producing and storing, or liquified sugar, as well as  building impressively long needs using,  was secreted by workers in a particular colony.
    • They are called a social insect becomes it lives in a colony or community with other individuals of the same species.
    • Honey bees measure about $$15\ mm$$ light and are light brown in colour. Their body is segmented: stinger, legs, antenna, their segments of thorax and six visible segments of abdomen.
    • In honey bees, the drones (males) are entirely derived from the given, this mother. The diploid given has $$32$$ chromosomes and diploid drones $$16$$ chromosomes.
    • Workes lay an unfertilised egg. Batches of works bees are short-lived and are constantly being replaced by the next batch, so this kin selection is possible a strategy to ensure the proper working of hive.
  • Question 8
    1 / -0
    Plant tissue culture is used widely in
    Solution
    • Tissue culture is basically the growth in an artificial medium of cells derived from living tissue. This is facilitated via the use of liquid, semi-solid or solid growth medium, such as broth or agar. 
    • Different techniques in plant tissues culture may offer certain advantages of our traditional advantageous method of propagation, which includes the production of exact copies of plants that produce desirable products, quickly producing nature plants, from plant cell that have modified genetically, the production of multiplies of plats, the regeneration of the whole plant from plant cell that have modified genetically, the production of plants in sterile containers that allows them to be moved avoiding risks, the production of plants from seeds with less germinating and growing capacity .i.e orchids and Nepenthes, etc. 
    • Explants far this can be taken from many different parts of a plant including portions of shoots, leaves, stems, flower roots, single undifferentiated cells and from many types of mature cells. The types of tissue culture include seed culture, embryo culture, callus culture, organ culture, protoplast culture, etc. 
    • The major steps of Tissue culture in plants are the Initiation phase, Multiplication phase and then Root formation. The father of plant tissue culture is considered to be German Botanist, Haber landt who conceived the concept of cell culture in $$1902$$. Now, tissue culture is vastly used to produces plants. But still Animal cell culture is also in wide used, which provides the basis to study regulation proliferation, differentiation and to perform genetic manipulation
  • Question 9
    1 / -0
    The life span of a honey bee drone is
    Solution
    Drones are the largest bees in the colony present only during late spring and summer and their main function is to fertilize the virgin queen during her mating flight for the progeny. Drones become sexually mature about a week after emerging and die soon after mating. Their presence is believed to be important for normal colony functioning. Drones live for a very short period of about 1 - 2 months.
  • Question 10
    1 / -0
    The totipotent cell can form a ____________.
    Solution
    Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in an organism. Spores and Zygotes are examples of totipotent cells. 
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