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Organisation of Living World Test - 7

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Organisation of Living World Test - 7
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  • Question 1
    1 / -0
    Meristematic tissues
    Solution
    Meristematic tissues have the power of cell division.because it is composed of immature and undifferentiated cells which are either in a continuous state of division or retain the power of division .The cells produced by meristem later transform into permanent cells.
  • Question 2
    1 / -0
    Which of the following meristems helps in increasing the girth of a plant?
    Solution
    Lateral meristem helps in increasing the girth of a plant because they surround the established stem of a plant and cause it to grow laterally (i.e., larger in diameter).
  • Question 3
    1 / -0
    Which of the following tissues translocates food in plants?
    Solution
    Phloem tissue translocates food in plants.This process of transportation is called translocation.
  • Question 4
    1 / -0
    Which of the following is a function of meristem?
    Solution
    Meristematic tissue helps in growth of the plants as they are composed of immature,undifferentiated cells which are in the state of division and growth.
  • Question 5
    1 / -0
    Which of the following is produced by intercalary meristem?
    Solution
    Primary growth is produced by intercalary meristem. Its position is at the base of the leaf, at the base of the node, or after the base of internode.
  • Question 6
    1 / -0
    What do you call the cells having the ability to divide?
    Solution
    Meristematic cells have the ability to divide because it is composed of immature and undifferentiated cells which are either in a continuous state of division or retain the power of division .
  • Question 7
    1 / -0
    Which of the following tissues provides mechanical strength to the plants?
    Solution
    Sclerenchyma tissue provides mechanical strength to the plants. This is due to the cell geometry and the orientation of the cellulose which provides diverse combinations of strength, flexibility and stiffness in plant organs subjected to different loads by gravity, wind and weather.
  • Question 8
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    Which of the following tissues possess sieve tubes and companion cells?
    Solution
    Phloem tissue possess sieve tubes and companion cells. The metabolic functioning of sieve-tube members depends on a close association with the companion cells, which transporting sugars throughout the plant.
  • Question 9
    1 / -0
    Which of the following does not occur in xylem?
    Solution
    Medullary rays does not occur in xylem. All other options occurs in xylem.
  • Question 10
    1 / -0
    Which of the following produces cork cambium?
    Solution
    Ground tissue produces cork cambium. It is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems.
  • Question 11
    1 / -0
    Cells of which of the following tissues possess totipotency?
    Solution
    Cells of meristematic tissue are totipotent as they are composed of immature and undifferentiated cells, which are either in a continuous state of division or retain the power of division.
  • Question 12
    1 / -0
    By which of the following processes do plant tissues become woody?
    Solution
    Lignification is the process which makes the plant tissues woody.
  • Question 13
    1 / -0
    Which of the following tissues form long, flexible but strong strands in leaf stalks?
    Solution
    Collenchyma forms long, flexible but strong strands in leaf stalks.and provides support fills vacant spaces that will be used for later growth.
  • Question 14
    1 / -0
    Flesh of a fruit is mostly made up of which of the following tissues?
    Solution
    Flesh of a fruit is mostly made up of parenchyma.They possess dense cytoplasm and are active metabolites.
  • Question 15
    1 / -0
    Which of the following tissues has dead cells?
    Solution
    Sclerenchyma cells are usually dead cells that have heavily thickened secondary walls containing lignin. The cells are rigid and non-stretchable and are usually found in non-growing regions of plant bodies, such as the bark or mature stems.
  • Question 16
    1 / -0
    Which of the following epithelium is present in the epidermis of skin of vertebrates?
    Solution
    Stratified epithelium is present in the epidermis of skin of vertebrates.
  • Question 17
    1 / -0
    In which of the following organs is transitional epithelium found?
    Solution
    Transitional epithelium is found in ureter. It is a stratified epithelium in which the shape of the surface cells changes (undergoes transitions) depending on the degree of stretch.
  • Question 18
    1 / -0
    Which of the following cells secretes the matrix of the connective tissue?
    Solution
    Fibrocytes secretes the matrix of the connective tissue. A fibrocyte is an inactive mesenchymal cell, that is, a cell showing minimal cytoplasm, limited amounts of rough endoplasmic reticulum and lacks biochemical evidence of protein synthesis
  • Question 19
    1 / -0
    Which of the following tissues are present in tendons?
    Solution
    Modified white fibrous tissues are present in tendons.
  • Question 20
    1 / -0
    Which of the following types of epithelium is present in cornea, oesophagus, urethra and vagina?
    Solution
    Stratified squamous epithelium is present in cornea, oesophagus, urethra and vagina.
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