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Morphology of Flowering Plants Test 18

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Morphology of Flowering Plants Test 18
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  • Question 1
    1 / -0
    An example of monocot fibre yielding plant is
    Solution
    Cocos nucifera, the coconut palm, is a monocot perennial member of the Arecaceae, cultivated in tropical areas worldwide for its fruit and fiber. Coir, the fiber from the husk of the coconut is used in ropes, mats, door mats, brushes, sacks, caulking for boats, and as stuffing fiber for mattresses. It is used in horticulture in potting compost, especially in orchid mix. Thus, option A is correct. Corchorus, Clematis and Crotalaria are dicot plants. Thus, other options are wrong.
  • Question 2
    1 / -0
    Pistils are also called 
  • Question 3
    1 / -0
    Identify the wrong statement.
    Solution
    The wrong statement is " the side of the flower towards the bract is called posterior side"
    The correct statement is the side of the flower towards the bract is called the anterior side. 
    So, the correct answer is 'Side of the flower towards the bract is called posterior side'
  • Question 4
    1 / -0
    The plants whose' seeds have two cotyledons are called
  • Question 5
    1 / -0
    Sunflower is a
  • Question 6
    1 / -0
    Inflorescence having unisexual sessile flowers is
    Solution
    A catkin is a slim, cylindrical cluster of flowers with no petals, usually wind-pollinated and sometimes insect pollinated. The female flowers in catkin are sessile and solitary in the axilla of a bractea longer than themselves. In spike, flowers are bisexual, sessile or non- pedicellate. In spikelet, flowers are hermaphrodite. In raceme, flowers are pedicellate an bisexual.
  • Question 7
    1 / -0
    An example of a plant that lives in water is
  • Question 8
    1 / -0
    Spathe is present in the flowers of
    Solution
    Spathe is present in banana flowers. Spathes are boat-shaped bracts that are brightly coloured, larger and spirally arranged structures that protect the flowers.  They roll back and fall when flowers open-up.
  • Question 9
    1 / -0
    A racemose type of inflorescence with its main axis almost flat is called ____________.
    Solution

    A. in Corymb's main axis is short. Lower flowers are having long pedicles than upper ones. It is a type of racemose inflorescence such as in Iberis.

    B.  In Umbel, the main axis is very much reduced and all flowers appear to be arising from the same point. At its base the cluster of bracts forming an involucre.

    C. In this type of racemose inflorescence, the main axis remains elongated with the older lower flowers.

    D. Capitulum or head bears many sessile with small florets. The main axis is flat and called as a receptacle. It is a type of racemose inflorescence as in the sunflower.

    So, the correct answer is D.

  • Question 10
    1 / -0
    Inflorescence in which flowers develop from different places of the peduncle reach the same level, is
    Solution
    The peduncle is the stalk of an inflorescence (group or arrangement of flowers on a plant). A corymb is a cluster of flowers on stalks starting at different levels but reaching the same height e.g., candytuft. A catkin is a slim, cylindrical cluster of flowers with no petals, usually wind-pollinated and sometimes insect pollinated e.g., oak. An umbel is an inflorescence which consists of a number of short flower stalks called pedicles which spread from a common point e.g., brahmi. A raceme is the cluster of flowers in which the separate flowers are attached by short equal stalks at equal distances along a central stem e.g., radish. Thus, the correct answer is option B.
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