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Morphology of Flowering Plants Test 47

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Morphology of Flowering Plants Test 47
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  • Question 1
    1 / -0
    Which one of the following plants does not belong to family Euphorbiaceous?
    Solution
    Abution indicum belongs to the family Malvaceae. The other plants belong to the family Euphorbiaceae. Hence, the correct answer is option A.
  • Question 2
    1 / -0
    What is the number of region in which a root is divided?
    Solution
    The root is divided mainly into 3 zones, namely
    1. The meristamatic zone.
    2. The elongation zone.
    3. The differentiation zone.
    So, the correct option is C.
  • Question 3
    1 / -0
    The lens or strophiole is usually present in the seed(coats) of members of.
    Solution
    • Stophiole is the outgrowth of hilum which prevents in-out movement of water. This kind of structure is usually seen in legume crops like peas, beans, etc.. Legumes belong to the family fabaceae. Hence answer is Fabaceae

  • Question 4
    1 / -0
    Choose the correct answer from the alternatives given.
    Plants like clover and beans, that have nitrogen-fixing bacteria in their roots, belong to the family:
    Solution
    The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, are a large and economically important family of flowering plants and clover and beans belong to fabacea.
    So, the correct option is 'Fabaceae'
  • Question 5
    1 / -0
    In pea, the placentation is
    Solution
    In sweetpea (Pisum sativum), the placentation is marginal, in which the placenta develops along the junction of two carpels, in a unilocular ovary. In basal placentation, the ovules are few or reduced to one and are borne at the base of ovary.
    So, the correct option is, 'marginal'.

  • Question 6
    1 / -0
    The edible part of cauliflower is the 
    Solution
    Flowers are the reproductive organs of a plant. An inflorescence is a group or cluster of flowers arranged on a stem that is composed of the main branch or a complicated arrangement of branches. Cauliflower is one of several vegetables in the in the genus Brassica, which is in the family Brassicaceae. The cauliflower head is composed of a white inflorescence meristem. Typically, only the head is eaten which is the edible white flesh.
    So the correct option is 'inflorescence'.
  • Question 7
    1 / -0
    Choose the correct answers from the alternatives given.
    The type of inflorescence which is not racemose but resembles a single flower is called
    Solution
    A cyathium is one of the specialised pseudanthia forming the inflorescence of plants in the genus Euphorbia. A cyathium consists of Five bracteoles. These are small, united bracts, which form a cup-like involucre. Their upper tips are free and in the beginning, cover the opening of the involucre. 
    So, the correct option is, 'cyathium'.
  • Question 8
    1 / -0
    Choose the correct answers from the alternatives given.
    One of the parts in the outermost ring of floral structures, forming a bud cove; is a:
    Solution
    Sepals constitute the lower accessory whorl or outermost series of green flattened or foliaceous floral organs which are mainly meant for protecting other floral parts in the bud conditions.
    So, the correct answer is sepal.
  • Question 9
    1 / -0
    Identify the types of inflorescence shown in the figure and select the correct option for A and B.

    Solution
    • The cymose inflorescence is the type of determinate inflorescence in which the tip of the main axis terminates in a flower and further growth continues by one or more lateral branches which also behave like the main axis. In some plants, the terminal flower is subtended by two lateral branches which further ends in flowers, e.g. are Jasmine, Harsingar, Pink etc. Here the flowers are arranged in a basipetal manner i.e, the older one at the top and younger at the base.
    • The racemose inflorescence is the indeterminate type of inflorescence which shows indefinite growth and bears a number of flowers due to the presence of active growing point, e.g., are Radish, Lupin etc. Here the flowers are arranged in an acropetal manner i.e., older at the base while younger at the top.
    • So, the correct answer is "A - Racemose, B - Cymose".
  • Question 10
    1 / -0
    Match the column I with column II and select the correct option from the gives codes.

      Column I   Column II  
     A. Pedicel (i) Reduces leaf  
     B. peduncle (ii) Stalk of the flower
     C. Bract  (iii) Stalk of the leaf 
     D. Petiole (iv) Inflorescence axis
    Solution
    (A) Pedicel - Stalk of the flower
    (B) Peduncle - Inflorescence axis
    (C) Bract - Reduced leaf
    (D) Petiole - Stalk of the leaf
    So, the correct answer is (a).
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