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Plant Growth an...

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  • Question 1
    1 / -0

    Auxins are generally produced in

  • Question 2
    1 / -0

    Which of the following statements is/are false?

    a. In dicotyledonous plants and gymnosperms, the lateral meristems appear very early in life.
    b. Plant growth is accompanied by both anabolic and catabolic processes. 
    c. The ability of plants for unlimited growth throughout life is due to the presence of meristems at certain locations in their body.

  • Question 3
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    Which of the following cause increase in the girth of the plant organ in which they are active?

    a. Vascular cambium
    b. Root apical meristem
    c. Cork cambium
    d. Shoot apical meristem

  • Question 4
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    The process of despecialisation of differentiated cells so that they become undifferentiated and meristematic is called

  • Question 5
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    How many cells per hour does a single maize root apical meristem can give?

  • Question 6
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    During differentiation, the cells undergo structural changes. Which of the following changes do(es) not occur in differentiation?

    a. The cells lose their protoplasm. 
    b. The cells regain the capacity of division under certain conditions.
    c. The cells develop a very strong, elastic lignocellulosic secondary cell wall. 

  • Question 7
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    Growth is measured by a variety of parameters. In a single maize root apical mersitem, growth is expressed as the

  • Question 8
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    Which of the following plant growth regulators is/are not involved in growth promoting activities?

  • Question 9
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    Which of the following statements is/are false?

    a. Heterophylly in cotton and coriander is an example of plasticity.
    b. Cells positioned away from root apical meristems differentiate as root-cap cells.
    c. The growth of the given system per unit time expressed as per unit initial parameter is called the absolute growth rate.

  • Question 10
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    Which of the following is not a use of auxins?

  • Question 11
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    The rise in rate of respiration during the ripening of fruits is called respiratory climacteric. Which of the following plant growth regulators is responsible for this?

  • Question 12
    1 / -0

    The correct sequence leading to the growth curve

  • Question 13
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    Which of the following statements is/are false regarding the phase of maturation?

    a. The cells in this phase attain their maximal wall thickening. 
    b. The cells in this phase attain their maximal protoplasmic modifications.
    c. The cells in this phase have increased vacuolation.

  • Question 14
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    Match the following:

    Plant growth regulators Examples
    a. Adenine derivative 1. Abscisic acid
    b. Derivative of carotenoids 2. Kinetin
    c. Terpenes 3. Gibberellic acid

  • Question 15
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    Match the following:

    Medium of growth of plants Function
    a. Water 1. It helps in releasing metabolic energy essential for growth activities.
    b. Oxygen 2. It is required by plants for the synthesis of protoplasm and it acts as a source of energy.
    c. Nutrient 3. It provides the medium for enzymatic activities that is needed for growth.

  • Question 16
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    The undifferentiated mass of parenchymatous cells are called

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