Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2010

  • question_answer
    The most primitive family of dicot is

    A)  Rosaceae                           

    B)  Magnoliaceae

    C)  Utricaceae                        

    D)  Cactaceae

    Correct Answer: B

    Solution :

    The family-Magnoliaceae is one of the most primitive   taxa   of   angiosperms.   The Magnoliaceae are woody trees and shrubs comprising 12 genera and about 220 species. The leaves are simple and alternate, usually with deciduous stipules that enclose the bud. The flowers are bisexual, actinomorphic, and usually large, generally with 3 sepals and 6 to many petals. The and roecium consists of many helically disposed stamens, each with generally large microsporangia and usually a short, poorly differentiated filament. The gynoecium is apocarpous, consisting of many helically disposed simple pistils. Each pistil has a superior ovary with a single locule and one to several marginal ovules. All of the floral parts are distinct and are attached to an elongated receptacle. The pistils mature into follicles or less often berries or samaras.


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