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Sexual Reproduction in Flowering Plants Test - 57

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Sexual Reproduction in Flowering Plants Test - 57
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  • Question 1
    1 / -0

    Which is this plant?

    Solution
    Correct option: C
    Explanation:
    • Ecballium is the plant depicted in the diagram.

    • It is also known as squirting cucumber.
    • It has been given this common name because it spurts a large amount of adhesive fluid seen with the naked eye.
    Ecballium is the plant shown in the diagram.

  • Question 2
    1 / -0

    To which family this plant belongs to?

    Solution
    The given plant belongs to Cucurbitaceae, could be predicted by making use of the following features:
    The stems are hairy and pentangular. Tendrils are present at 90 degrees to the leaf petioles at nodes. Leaves are exstipulate alternate simple palmately lobed or palmately compound.
  • Question 3
    1 / -0

    What is the phenomenon shown?

    Solution
    The given plant in the picture shows the phenomenon of autochory: Self-dispersal of seeds. The physical and often explosive discharge of seeds from the fruit is defined as autochory.
  • Question 4
    1 / -0
    The process of removing stamens from flowers during hybridization is
    Solution

    In artificial hybridization, the process of removing stamens from the bisexual flowers without affecting female parts, so as to prevent self-pollination is known as emasculation. This process is carried out by plant breeders in order to cross-pollinate the required plant variety with the desired variety to get desired results.

    So, the correct answer is 'Emasculation'

  • Question 5
    1 / -0

    The hairs on the stem, suggest it to be

    Solution
    In dicot stem, there is the presence of unicellular trichomes which appears like hairs. Whereas it is absent in monocot stem. In both monocots and dicots, there are chances of roots containing unicellular epidermal hairs. But dicot stem alone contains hair.
  • Question 6
    1 / -0
    Caryopsis fruit is found in
    Solution
    Caryopsis fruit is found in a wheat. A caryopsis is a type of simple dry fruit one that is monocarpellate, indehiscent and resembles an achene, except that in a caryopsis, the pericarp is fused with the thin seed coat. The caryopsis is popularly called as a grain and is the fruit typical of the family Poaceae.
    Thus, the correct answer is option A.
  • Question 7
    1 / -0
    Ovary is half-inferior in the flowers of
    Solution
    Ovary is half-inferior in the flowers of plum. A half-inferior ovary is embedded or surrounded by the receptacle. Such flowers are termed perigynous or half-epigynous. In some classifications, half-inferior ovaries are not recognized and are instead grouped with either the superior or inferior ovaries. Therefore, the correct answer is option C.
  • Question 8
    1 / -0
    Ebracteate flowers mainly found in
    Solution
    Cruciferae flowers - The structure of the flowers is extremely uniform throughout the family. They have four free saccate sepals and four clawed free petals, staggered. They can be dissymmetric or slightly zygomorphic, with a typical cross-like arrangement (hence the name Cruciferae). 

    They have six stamens, four of which are longer and are arranged in a cross-like the petals and the other two are shorter (tetradynamous flower). The pistil is made up of two fused carpels and the style is very short, with two lobes. Superior ovary. The flowers form ebracteate racemose inflorescences, often apically corymb-like. Flowers that do not have bracts at the base of pedicel (stalk of flower) are called as ebracteate flowers. Flowers of Solanaceae, Malvaceae and Liliaceae are bracteate flowers.

    Therefore, the correct answer is option C.
  • Question 9
    1 / -0
    Didynamous condition is related to
    Solution
    Didynamous condition is related to androecium. The stamens in a flower are collectively called as the androecium. The androecium in various species of plants form a great variety of patterns, some of them highly complex. It surrounds the gynoecium and in turn the perianth, if there is one, surrounds the androecium. In didynamous condition the stamens occur in two pairs, a long pair and a shorter pair.
    Therefore, the correct answer is option A.
  • Question 10
    1 / -0
    The legume fruit develops from
    Solution
    Legume or pod fruits are monocarpellary (from monomerous gynoecium), generally multiseeded, hypogynous flower, marginal placentation. Dehiscence is on two sides (ventral and dorsal) from the apex of the fruit. Characteristic for Fabaceae. Monocarpillary means ovary with one carpel. The legume fruits do not develops from inferior ovary, bicarpillary ovary and multicarpillary ovary. 
    Thus, the correct answer is option B.
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