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Morphology of Flowering Plants Test 19

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Morphology of Flowering Plants Test 19
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which one of the following statements is correct ? 
    Solution

    The bulb is the modified underground stem surrounded by the fleshy leaves. It usually contains stored food like the tulip bulb. Also, a capsule is a type of simple but mostly dry and dehiscent fruit. Some examples are Cotton, Eucalyptus, Datura, Witch Hazel. Orchid seeds don’t have endosperm. Primrose is having free central placentation.

    Thus, the correct answer is option D.

  • Question 2
    1 / -0
    Which is true ________________________.
    Solution

    A. Umbel is the racemose inflorescence, with the reduced main axis is reduced and all flowers appear to be arising from the same point.

    B. In raceme the main axis is bisexual and pedicellate flowers are arranged acropetally.

    C. The spadix is having spikes with a fleshy axis having both male and female flowers.

    D. Spike is a racemose inflorescence, which has sessile and bisexual flowers as in wheat.

    So, the correct answer is D.

  • Question 3
    1 / -0
    Which of the following is an oil seed plant ? 
    Solution
    Sunflower is an oil seed plant (Helianthus annus L). The seeds of sunflower has 39 to 49% of oil.  It is the premium cooking oil because it has high level of unsaturated fatty acids. 
  • Question 4
    1 / -0
    Oil yielding legume is _____________.
    Solution
    Glycine max is oil yielding legume. It is called soyabean. It is native to east asia.
    So, the correct answer is 'Glycine max'
  • Question 5
    1 / -0
    Which of the following is a sessile?
    Solution
    Rice is a sessile plant. In a sessile plant, the leaf blade connects directly to the stem. It has no petiole and the leaf blade expands from the stem itself. 

  • Question 6
    1 / -0
    When the filament of anther is fixed at a point about the middle of the connective and the movement is free in the sac is called as ______
    Solution
    In most grasses, the attachment is versatile where the filament is attached merely at a point about the middle of the connective so that the anthers can swing on it freely.
  • Question 7
    1 / -0
    The most important function of inflorescence is to help in
    Solution
    Inflorescence is the arrangement of flowers on the stem of a plant. It provides the chance of cross-pollination. It makes flowers more conspicuous to attract insects towards it. Large inflorescence enhances the chance of wind pollution. Insects are the pollinators. Due to the aroma emitted from the petals and the nectar glands and colour of the flower insects get attracted towards the flower. When an insect grazes through a flower to collect nectar, pollen grains stick on its body from the anther. As the insect move to each flower, it leaves a residue of pollen on the stigma and triggers the process of pollination. Some of these pollinators are honeybees, bumblebees butterflies etc.
  • Question 8
    1 / -0
    Fruit formed from an inflorescence is
    Solution
    Composite fruits or multiple fruits that are developed from entire inflorescence and are of two types:-
    Fruits that develop from a spike of spidex inflorescence as seen in pineapple are called sorosis. 
    Fruits that develop from hypanthodium inflorescence is called syncous as seen in Banyan.
    So the correct option is 'Composite fruit'
  • Question 9
    1 / -0
    Seeds which are used as Jeweller's weight ______________.
    Solution
    Abrus precatorius seeds were used as Jeweller's weight. This is because, the seeds of this plant have very consistent weight approximately 105 mg
    So, the correct answer is 'Abrus precatorius'
  • Question 10
    1 / -0
    The botanical name of boat lily is
    Solution
    Tradescantia spathacea is boat lily. Calotropis is milkweed. Homo sapien is human. Syzygium aromaticum is cloves. 
    Therefore, the correct answer is option A.
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