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Morphology of Flowering Plants Test 39

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Morphology of Flowering Plants Test 39
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  • Question 1
    1 / -0
    In Callistemon, the inflorescence is?
    Solution
    Leaf veins are clearly prominent on the lower surface, inflorescence are spike arranged, terminal and clustered flowers are independent spikes, small petals, inconspicuous and deciduous, the spike consisting mostly of masses of bright red stamens, resembling a bottle brush. Fruit is small woody capsule.
    In callistemon, the inflorescence is terminal.
  • Question 2
    1 / -0
    Marginal placentation is found in
    Solution
    Marginal placentation is a feature of the family Leguminosae or Fabaceae. The flowers show monocarpellary apocarpous gynoecium with the placenta being developed on the ridge along the ventral suture and the ovules are borne on this ridge. This type of placentation is called marginal placentation.
    Hence, the correct answer is 'Fabaceae/Leguminosae'.
  • Question 3
    1 / -0
    In Dorstenia, the inflorescence is?
    Solution
    A. Coenanthium in which the receptacle, instead of forming a closed structure, becomes saucer-shaped with the margins slightly curved up. The example is dorstentia belonging to the family Moraceae. 
    B. Anthodium or capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. It is a type of racemose inflorescence. Example: sunflower.
    C. Spike in which peduncle has bisexual and sessile flowers. It is a type of the racemose inflorescence. 
    D. Spikelet is small and special spike. Flowers are produced in the axil of fertile bracts called lemma. It is type of racemose inflorescence. 

    So, the correct answer is 'Coenanthium'.
  • Question 4
    1 / -0
    Inflorescence is thyrse$$/$$thyrsus in ________.
    Solution
    A thyrse/thyrsus is a type of inflorescence in which the main axis grows indeterminately and the subares (branches) have determinate growth. Inflorescence is thyrse/ thyrsus in Grape.
  • Question 5
    1 / -0
    A fodder plant is
    Solution

    • Medicago sativa, commonly known as Alfalfa is a perennial flowering plant belonging to the family Fabaceae. It is cultivated as an important fodder plant in many countries around the world.

    • Melilotus indicus is a yellow-flowered herb native to northern Africa, Europe and Asia. It is an annual and perennial herb. It is used as a source of nectar, fodder and soil improver.

    • Trifolium alexandrinum, commonly known as Egyptian clover or Berseen clover is an annual clover cultivated mostly in irrigated subtropical regions. It is used as fodder mainly for cattle and milk buffalo.

    • So, the correct answer is 'All of the above'.

  • Question 6
    1 / -0
    Oil seed is
    Solution

    Peanut or groundnut, taxonomically classified as Arachis hypogaea is a legume crop grown mainly for its edible seed and oil present in the seed. It is widely grown in tropics and subtropics, is important to both small and large commercial producers. It is classified both as a grain legume and as an oil crop. Peanut oil is used in cooking. So, the correct answer is 'Arachis hypogaea'.

  • Question 7
    1 / -0
    Gynoecioum of fabaceae is
    Solution
    The gynoecium is the female reproductive organs of a flower which is composed of a group of pistils. In Fabaceae, the ovary is superior, monocarpellary, unilocular with many ovules, style is single. Hence, the gynoecium of Fabaceae is monocarpellary.
    So, the correct answer is 'Monocarpellary'.
  • Question 8
    1 / -0
    Fruit is legume in family
    Solution
    Fabaceae or Leguminosae, commonly known as pea, bean or legume family and are a large and economically important family of flowering plants. It includes trees, shrubs and perennial or annual herbaceous plants which can be easily recognised by a fruit (legume). The ovary is most typically develops into legume. A legume is a simple, dry fruit that usually dehisces on two sides. Legume is commonly known as a pod.
    So, the correct answer is 'Fabaceae'.
  • Question 9
    1 / -0
    Nodulated roots are characteristic of family
    Solution
    Root nodules are present on the roots of plants (primarily Fabaceae) which is associated with symbiotic nitrogen-fixing bacteria. Under nitrogen limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia. Nodulated roots are characteristic of Fabaceae. The Fabaceae include legume crops such as peas and beans.
    So, the correct answer is 'Fabaceae'.
  • Question 10
    1 / -0
    Corolla is papilionaceous in
    Solution
    Corolla is the second axillary whorl composed of petals. Like calyx, corolla also protects essential stamens and carpels within. Papilionaceous corolla has five free petals resembling a butterfly. The posterior superior petal is larger than the others (vexillum or standard), two anterior inferior petals which are usually more or less united forming a boat-shaped structure (carina or keel), two lateral petals called wings which overlap the carina and are themselves overlapped with the vexillum. This is a characteristic of subfamily Papilionaceae (eg: pea flower) belonging to family Fabaceae.
    So, the correct answer is 'Fabaceae'.
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