12th Class Biology Sexual Reproduction in Flowering Plant / फूलों के पौधों में यौन प्रजनन Question Bank Case Based - Sexual Reproduction in Flowering Plants

  • question_answer
    Direction Read the following and answer the questions from given below
    Pollination is the act of transferring pollen grains from male anther of a flower to the female stigma. The goal of every living organism including plants is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds which then germinate to produce new plants. Two types of flowers with their pollination is seen in plants are chasmogamy and cleistogamy. Chasmogamous flowers have strikingly coloured petals and nectar guides/nectaries in contrast to cleistogamous flowers which are minute bud-like.
    (v) Identify the features of the type of flower given below.
     
    Choose the correct conclusions drawn from this figure.
    I. Cleistogamous flowers are not dependent on pollinators.
    II. Chasmogamous flowers are bisexual.
    III. Chasmogamous flowers do not show cross-pollination.
     

    A) I and II                         

    B) I and III

    C) II and III                       

    D) Only I

    Correct Answer: D

    Solution :

    [d] Cleistogamous flowers are not dependent on pollinators. These are bisexual flowers which never open thus always remain closed. Therefore, there is no chance of cross-pollination in them.


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