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Morphology of Flowering Plants Test 35

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Morphology of Flowering Plants Test 35
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  • Question 1
    1 / -0
    Inflorescence in which flowers developing from different places of the peduncle reaching the same level is?
    Solution
    A. Catkin is the pendulous spike in leaf axis which bears unisexual flowers. It is a type of racemose inflorescence. Examples: Morus, birch, and oak.
    B.  Corymb is lower flowers have long pedicels 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. Examples: Iberis and Capsella.
    C. 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 forms an involucre. It is a type of racemose inflorescence. Example: hydrocotyle.
    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 'Corymb'.
  • Question 2
    1 / -0
    Which type of inflorescence occurs in Ficus?
    Solution
    A. Verticillaster is a cluster of sessile or subsessile flowers borne on a dichasial cyme ending in monochasial cyme in the form of condensed whorl on either side of the node. Example: tulsi.
    B. 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 a long axis and in between both are situated short-styled gall flowers which are sterile. Example: ficus.
    C. Cymose in which the main axis terminates into a flower and has limited growth. The flowers are arranged in basipetal order. Example: teak.
    D. Racemose in which the shoot axis continue to grow indefinitely and the flowers are borne in acropetal order. Example: mustard.

    So, the correct answer is 'Hypanthodium'.
  • Question 3
    1 / -0
    Edible part of cauliflower is _______
    Solution
    C. Inflorescence
    Reason: Cauliflower belongs to the species Brassica oleracea from the family Brassicaceae. The edible part of the plant is the white center called as the curd. Mostly only the white curd is used. This white curd or cauliflower head is actually a white inflorescence meristem which resembles the broccoli but the difference is the edible part of broccoli is it's flower buds. The inflorescence of cauliflower is is compound racemose.
  • Question 4
    1 / -0
    Number of female flowers in a cyathium is?
    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 a single stamen while a single pistil represents a female flower. Example: euphorbia.

    So, the correct answer is '1'.
  • Question 5
    1 / -0
    Rhipidium inflorescence of Solanum nigrum is?
    Solution
    A) Modified scorpioid cyme 

       Rhiphiduim is scorpiod cyme having all flowers in one plane. In helicoid cyme, the flowers are born one one side. 
    Eg., Begonia.
  • Question 6
    1 / -0
    Verticillaster inflorescence occurs in?
    Solution
    A. Verticillaster is a cluster of sessile or subsessile flowers borne on a dichasial cyme ending in monochasial cyme in the form of condensed whorl on either side of the node. The example is Lamiaceae/Labiatae (salvia).
    B. Raceme in which peduncle has bisexual and pedicellate flowers arranged acropetally. It is a type of racemose inflorescence. The example is Brassicaceae/Cruciferae (mustard).
    C. Capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. The example is composite/Asteraceae (cosmos).
    D. Cymose in which the main axis terminates into a flower and hence has limited growth. The flowers are borne in a basipetal order. The example is Solanaceae.

    So, the correct answer is 'Lamiaceae/Labiatae'.
  • Question 7
    1 / -0
    Which is true?
    Solution
    A. Umbel is racemose inflorescence where the main axis is reduced very much and all flowers appear to be arising from the same point. Example: hydrocotyle.
    B. In raceme the main axis has bisexual and pedicellate flowers arranged acropetally. Example: radish.
    C. The spadix is a spike with a fleshy axis having both male and female flowers. Example: palm.
    D. Spike is a racemose inflorescence having sessile and bisexual flowers. Example: wheat.

    So, the correct answer is 'spike is a racemose inflorescence having sessile flowers'.
  • Question 8
    1 / -0
    Inflorescence having unisexual sessile flowers is?
    Solution
    A. Spike in which peduncle has bisexual and sessile flowers. It is a type of racemose inflorescence. Example: achyranthes.
    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. Example: wheat.
    C. Catkin is a pendulous spike in leaf axis which bears sessile and unisexual flowers. It is a type of racemose inflorescence. Example: oak.
    D. The spadix is a spike with a 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. Example: palm.

    So, the correct answer is 'Catkin'.
  • Question 9
    1 / -0
    In which inflorescence the ratio of female to male flowers is $$1:\propto$$?
    Solution
    Cyathium inflorescence consists of a single central female flower surrounded by many groups of male flowers. In each group, the male flowers are borne in a scorpiod manner and the inflorescence is surrounded by an involucre e.g., Euphorbia.

    So, the correct answer is 'Cyathium'.
  • Question 10
    1 / -0
    All the florets are disc florets in _________.
    Solution
    All the florets are disc florets in vernonia. The name of an exceedingly large and wide spread family of flowering plants.
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