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Morphology of Flowering Plants Test 26

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Morphology of Flowering Plants Test 26
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  • Question 1
    1 / -0
    A leaf without petiole is:
    Solution
    A petiole is a stalk that attaches a leaf to the stem of a plant. A leaf without a petiole is called a sessile leaf. It is a transition between the stem and the lamina.
    Thus, the correct answer is 'Sessile.'
  • Question 2
    1 / -0
    Which of the following has succulent root?
    Solution
    Asparagus has succulent roots because the plant stores food in them making fleshy and helpful for perrenation.
    So, the correct option is 'Asparagus'.
  • Question 3
    1 / -0
    A plant showing reticulate venation is
    Solution
    The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, ficus. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, Zea (maize). Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation.
    Thus, the correct answer is 'Ficus.'
  • Question 4
    1 / -0
    Root modification is
    Solution
    Root modifications are the permanent change in the structure which are caused so that the plant can be able to withstand and adjust to the environment.
    So, the correct answer is 'Permanent structural changes in roots'.
  • Question 5
    1 / -0
    Leaves develop from
    Solution
    Leaves develop from nodes. Apart from leaves, branches and aerial roots also develop from nodes from the stem. It also holds buds. Adventitious roots may also develop from it. Internodes are the intervals between the nodes. 
    Thus, the correct answer is 'Nodes.'
  • Question 6
    1 / -0
    Venation is monocots in
    Solution
    The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, ficus. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa. Leaves of monocot plants generally show parallel venation and leaves of dicot plants generally show reticulate venation.
    Thus, the correct answer is 'Parallel.'
  • Question 7
    1 / -0
    Smallest leaf occurs in
    Solution

    The smallest leaf occurs in Wolffia. In Wolffia, the leaf is fused with the stem to form minute flat thallus. Thus, the correct answer is 'Wolffia.'

  • Question 8
    1 / -0
    Presence of sheathing leaf base and ligule are characteristic of
    Solution
    A ligule is an outgrowth present at the junction of leaf sheath and lamina in grass leaf. It occurs at the end of petiole at the leaf base. It is a strap-shaped extension of the corolla. It is a membranous appendages. Grass leaf also has sheathing leaf base. 
    Thus, the correct answer is 'Grass leaf.'
  • Question 9
    1 / -0
    In the leaves, veins are useful for
    Solution
    Veins in leaves are made up of xylem and phloem. It is useful in providing mechanical support to the leaf. It also helps in transport of both water and minerals via xylem tissue and transport of organic nutrients via phloem tissue to the rest of the plant.
    Thus, the correct answer is 'All of the above.'
  • Question 10
    1 / -0

    Approximate diameter of Victoria leaf is

    Solution
    The largest leaf belongs to Victoria regia in plant kingdom. The approximate diameter of Victoria leaf is 1.3 meter. It is an aquatic plant. It has a floating leaves. 
    Thus, the correct answer is '1.3 m.'
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