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Morphology of Flowering Plants Test 52

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Morphology of Flowering Plants Test 52
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  • Question 1
    1 / -0
    The microsporangia of anther develop and become?
    Solution
    B. Pollen sacs
    Solution : Microsporangium is a structure in the plant’s male reproductive organ where the development of pollen takes place. After undergoing development, it become pollen sacs.
    So the correct answer is "Pollen sacs".
  • Question 2
    1 / -0
    Perianth is found in which family:
    Solution
    C. Liliaceae
    Reason: Liliaceae is a perianth because there is no distinction of sepals and petals, the non-essential floral organs.
  • Question 3
    1 / -0
    In Clerodendron _________ flower opens first.
    Solution
    Clerodendron shows cymose inflorescence so younger flowers are present at the base of the inflorescence, while older flowers are present at the top. Such an arrangement is called basipetal succession. The peripheral flowers open first.
    So, the correct option is 'Peripheral'.
  • Question 4
    1 / -0
    An inflorescence __________ the chances of pollination.
    Solution
    The arrangement of flowers is known as the inflorescence. It is useful for the plant as it increases the chances of attracting insect pollinators such as bees that help in pollination. The flower morphology, size, colour, nectar and odour act as signals for attracting these pollinators. 
    So, the correct option is 'improves'.
  • Question 5
    1 / -0
    All different types of dals are made from which type of seeds?
    Solution
    Pulses are dicots such as lupins, clover, lentils, pinto beans, kidney beans, soybeans, chickpeas and more. Thus the correct option is B. 
  • Question 6
    1 / -0
    In Funaria, archegonia attracts antherozoids by
    Solution
    • During fertilization of Funaria, the ventral canal cell and the neck canal cells of the archegonium dis­integrate forming a mucilaginous substance. This mucilaginous substance absorbs water accu­mulated as rain or dew water, then swells up and the resultant pressure breaks apart the terminal cover cell. Now sugar containing mucilaginous substances ooze out through the opening of the archegonial neck.
    • The liberated antherozoids are now attrac­ted chemotactically towards the archegonia. Large numbers of antherozoids enter the neck, but only one of them fuses with the egg nucleus to form the diploid zygote.
    • Hence In Funaria, archegonia attract antherozoids by 'Sucrose / Sugar '.
    • So, the correct answer is 'Sucrose / Sugar '.
  • Question 7
    1 / -0
    The diagram given below represent which type of inflorescence ?

    Solution
    B. Cymose
    EXPLANATION: This a diagram of cymose inflorescence. An inflorescence is a group of flowers, which are arranged on a stem that is a composition of complicated branches. In cymose inflorescence the main axis does not grow continuously, that the axis has limited growth. On the main axis the flower is present terminally. The flower is borne in a basipetal order, that means the new flowers are placed at the bottom and the old flowers are placed at the top of the axis. In Drosera we can see cymose inflorescence.  
  • Question 8
    1 / -0
    The axis of inflorescence is known as __________.
    Solution
    • The stalk holding the complete inflorescence and bearing the flowers or fruit, in a flowering plant is known as the peduncle. 
    • The pedicle is the stem that attaches a single flower. 
    • The petiole is the stalk that attaches a leaf to the stem and the leaflet of a pinnately compound leaf is called pinna. 
    So, the correct option is 'Peduncle'.
  • Question 9
    1 / -0
    Acropetal succession is seen in _______ inflorescence.
    Solution
    In Racemose type of inflorescence the main axis does not end in a flower, but it grows continuously and develops flowers on its lateral sides in acropetal succession.
    So, the correct option is 'Racemose'.
  • Question 10
    1 / -0
    Cymose Inflorescence is present in
    Solution
    Correct Option: A
    Explanation:

    • Cymose type of inflorescence is one in which the tip of the main axis ends in a flower.
    • This type of inflorescence is seen in Solanum, where the flowers are born in a single plane.
    • Sesbania and Trifolium have a racemose type of inflorescence.
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