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Morphology of Flowering Plants Test 30

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Morphology of Flowering Plants Test 30
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  • Question 1
    1 / -0
    Which inflorescence has biparous cyme ending in uniparous cymes?
    Solution
    A. 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 a single stamen while a single pistil represents a female flower. It is a type of cymose inflorescence. The example is Poinsettia.
    B. Verticillaster is a cluster of sessile or subsessile flowers borne on a biparous cyme (dichasial) ending in uniparous cyme (monochasial) in the form of condensed whorl on either side of the node. It is a type of cymose inflorescence. The example is Tulsi.
    C. Hypanthodium is fleshy receptacle forming a hollow cavity with an apical opening called ostiole. The flowers are developed on the inner wall of the hollow cavity. It is a type of cymose inflorescence. The example is banyan.
    D. Strobile is a type of spike in which each flower is borne in the axil of a persistent membranous bract with the pistillate inflorescence of the hop.

    So, the correct answer is 'Verticillaster'.
  • Question 2
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    Name the inflorescence in which flowers reach the same level though they arise from different points.
    Solution
    A. Umbel in which the main axis is reduced very much and all flowers appear to arise from the same point. At the base of flowers, a cluster of bracts forms an involucre. It is a type of racemose inflorescence. The example is Hydrocotyle.
    B. Catkin is a pendulous spike in leaf axis which bears unisexual flowers. It is a type of racemose inflorescence. The example is oak.
    C. Corymb in which 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.
    D. Capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. It is a type of racemose inflorescence. The example is a sunflower.

    So, the correct answer is 'Corymb'.
  • Question 3
    1 / -0
    Inflorescence typical of Gramineae$$/$$ Poaceae family is?
    Solution
    A. Capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. It is a type of racemose inflorescence. The example is a sunflower.
    B. Spikelet is a small and special spike. Flowers are produced in the axil of fertile bracts called lemma. It is a type of racemose inflorescence. Examples are wheat and grasses (Poaceae / Gramineae). 
    C. Corymbose raceme is found in mustard.
    D. Umbel in which the main axis is reduced very much and all flowers appear to be arising from the same point. At the base of flowers, the cluster of bracts forming an involucre. It is a type of racemose inflorescence. The example is Hydrocotyle.

    So, the correct answer is 'spikelet'. 
  • Question 4
    1 / -0
    Cyathium is characterised by?
    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. Several peripheral male flowers are represented by a single stamen, while a single pistil represents a female flower which is central. It is a type of cymose inflorescence. The example is Poinsettia.

    So, the correct answer is 'All the above'.
  • Question 5
    1 / -0
    The inflorescence of Mimosa is ________
    Solution
    This type of inflorescence is found in Acacia, Mimosa and Albizzia. In such cases the peduncle is reduced for condensed or to a circular disc. It flowers make a globose head, which is also called glomerule. 
  • Question 6
    1 / -0
    The type of inflorescence in Hamelia is _______
    Solution
    D) Polychasial cyme

     Inflorescence : Polychasial cyme with each helicoid branch. Calyx made up of sepals 5, gamosepalous, petaloid, reddish , valvate.
  • Question 7
    1 / -0
    A plant bearing solitary flowers is ________
    Solution
    Solitary flower means one flower at a specific position of a plant. It usually accompanies another word either terminal or axillary. 
    Solitary means a flower arising from the axial of a leaf (eg) china Rose.
  • Question 8
    1 / -0
    The female inflorescence of Maize is?
    Solution
    A. The spadix is a spike with the fleshy axis and having both male and female flowers. It is surrounded by large colored bracts called spathe. It is a type of racemose inflorescence. Examples are palm and monocots (maize).
    B. Spike in which peduncle has bisexual and sessile flowers. It is a type of racemose inflorescence. Example: Achyranthes.
    C. Catkin is a pendulous spike in leaf axis which bears unisexual flowers. It is a type of racemose inflorescence. Example: mulberry.
    D. Corymb in which lower flowers have long pedicles than upper ones so that all the flowers are brought more or less to the same level. The main axis is short. It is a type of racemose inflorescence. Example: iberis.

    So, the correct answer is 'spadix'.
  • Question 9
    1 / -0
    A plant having hypanthodium inflorescence is?
    Solution
    Hypanthodium is fleshy receptacle forming a hollow cavity with an apical opening called ostiole. The flowers are developed on the 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. It is a type of cymose inflorescence. The example is Ficus (banyan, fig and gular).

    So, the correct answer is 'Ficus'.
  • Question 10
    1 / -0
    Involucre forms a cup around the inflorescence of?
    Solution
    A. 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 a single stamen while a single pistil represents a female flower. It is a type of cymose inflorescence. Example: Poinsettia (Euphorbia pulcherrima).
    B. Capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. It is a type of racemose inflorescence. Examples: Compositae and sunflower.
    C. Hypanthodium is fleshy receptacle forming a hollow cavity with an apical opening called ostiole. The flowers are developed on the inner wall of the hollow cavity. It is a type of cymose inflorescence. Example: fig.
    D. Cobra plant is pitcher plant.

    So, the correct answer is 'Euphorbia'.
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