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Morphology of Flowering Plants Test 34

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Morphology of Flowering Plants Test 34
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  • Question 1
    1 / -0
    Opening$$/$$arrangement of flowers in a condensed cymose inflorescence is?
    Solution

  • Question 2
    1 / -0
    The most advanced type of inflorescence is?
    Solution
    Capitulum: An inflorescence that consists of closely packed flowers or florets which have no stalks and arise on a flattened axis, all at the same level. A spadix is a type of spike inflorescence having small flowers borne on a fleshy stem. Corymb is an inflorescence with the flowers growing in such a fashion that the outermost are borne on longer pedicels than the inner, bringing all flowers up to a common level.
  • Question 3
    1 / -0
    Cyathium and hypanthodium types of inflorescence are similar in having.
    Solution
    • Cyathium looks like a single flower. A cup-shaped involucre formed by bracts encloses a single female flower and a number of male flowers. Each male flower is represented by single stamen while a single pistil represents a female flower. The example is euphorbia. 
    • Hypanthodium is fleshy receptacle forming a hollow cavity with an apical opening called ostiole. The flowers are developed on an inner wall of the hollow cavity. The male flowers are situated at the top near the opening, at the bottom are situated the female flowers with long styles and in between both are situated short-styled gall flowers which are sterile. The example is ficus. Therefore, both have unisexual flowers.

    So, the correct answer is 'Unisexual flowers'.
  • Question 4
    1 / -0
    An inflorescence which is not racemose and appears like a flower is?
    Solution
    A. Capitulum or head in which the main axis becomes flat and called receptacle. It bears many sessile and small florets. It is a type of racemose inflorescence. The example is a sunflower.
    B. Cymose in which the main axis terminates into a flower and hence has limited growth. The flowers are arranged in a basipetal order. The example is teak.
    C. Cyathium looks like a single flower. A cup-shaped involucre formed by bracts encloses a single female flower and a number of male flowers. The example is euphorbia.
    D. Corymb in which the main axis is short. Lower flowers have long pedicles than upper ones so that all the flowers are brought more or less to the same level. It is a type of racemose inflorescence. The example is iberis.

    So, the correct answer is 'cyathium'.
  • Question 5
    1 / -0
    An edible inflorescence is?
    Solution
    B) Brassica oleracea 
        Brassica Oleracea is a plant specis that includes many common foods as cultivars, including cabbage, broccoli, cauliflower, kale, Brussels, sprouts, collard green, savoy, kohlrabi and gailan.
  • Question 6
    1 / -0
    Spike with unisexual flowers$$/$$Catkin occurs in?
    Solution
    Catkin is a pendulous spike in leaf axis which bears unisexual flowers. It is a type of racemose inflorescence. Example: mulberry.

    So, the correct answer is 'Mulberry'.
  • Question 7
    1 / -0
    An inflorescene having a number of achlamydeous male flowers surrounding a single achlamydeous female flower is?
    Solution

  • Question 8
    1 / -0
    Capitulum inflorescence is found in.
    Solution

  • Question 9
    1 / -0
    Hypanthodium inflorescence is found in?
    Solution
    A. Compound umbel is found in coriander.
    B. Capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. An example is a sunflower.
    C. A compound corymb is found in cauliflower.
    D. Hypanthodium is fleshy receptacle forming a hollow cavity with an apical opening called ostiole. The flowers are developed on an inner wall of the hollow cavity. The male flowers are situated at the top near the opening, at the bottom are situated the female flowers with a long axis and in between both are situated short-styled gall flowers which are sterile. The example is fig.

    So, the correct answer is 'Fig'.
  • Question 10
    1 / -0
    In catkin, the flowers are?
    Solution
    A. Catkin is the pendulous spike in leaf axis which bears sessile and unisexual flowers. It is a type of racemose inflorescence. Examples: Morus, birch, and oak.
    B. Spike is peduncle having bisexual and sessile flowers. It is a type of racemose inflorescence. Examples are Achyranthes and Adhathoda.
    D. Raceme is peduncle having bisexual and pedicellate flowers arranged acropetally. It is a type of racemose inflorescence. Examples: Larkspur and radish.

    So, the correct answer is 'Unisexual and sessile'.
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