Leaves are alternate, pinnately compound or simple and leaf base are pulvinate stipulate with reticulate venation. Spikeletes are arranged in a spike inflorescence which is composed of several to many spikelets which are combined in various manners on a main axis called the rachis. Flowers are borne in a basipetal order where younger flowers are near the base and older flowers are at the apex. Presence of an apical bud at the tip of potato tuber affirms it to be a stem. These four parts are classified under accessory organs and reproductive organs. The oldest flower is in the centre and ends the main floral axis (peduncle). The former whorl of bracts is called involucre and the latter involucel. After reading this article you will learn about: 1. grandibracteata are single flowers subtended byВ . Found inside вЂ“ The inflorescences are of two types, solitary and racemose. Example вЂ“ Chilli, d) Flower which has bilateral symmetry and can be divided into two halves only in one plane is known as a zygomorphic flower. Example вЂ“ Brinjal, Perigynous flowers are the ones in which gynoecium stays in the center and other parts of the flower are located on the rim of the thalamus almost at the same level. This type of opening of flowers is known as centrifugal. This inflorescence is found only in monocotyledonous plants. Each male flower is reduced to a solitary stalked stamen. NCERT Solutions for Class 11 Biology Chapter 5В Morphology of Flowering Plants is an important study tool for students of class 11 to ace their first term exam. (i) (ii) Solitary (a) Solitary does not form the real inflorescence. Foeniculum (Fennel), Coriandrum (Coriander - dhania), Carrot, Cumin. A racemose or spiked inflorescence of this kind would be at onceВ . Found inside вЂ“ 155 ), and bearing solitary flowers, expand after the flower terminating the primary. It is single-chambered, but due to formation of a false septum, it becomes two-chambered. aphlebiae Imperfect or irregular leaf endings commonly found on ferns and fossils of ferns from the Carboniferous Period. apices The tip the point furthest from the point of attachment. What is вЂlimit of resolutionвЂ™ in the functioning of a microscope? Racemose Inflorescence 2. It has small, globose tubers giving rise to a solitary, rounded, reniform, ovate-cordate leaf that more or less reclines on the surface of the substrate and has a sessile or short inflorescence bourne from the axil of the leaf and carries a single flower. In this type of inflorescence the peduncle bears a terminal flower and stops growing. (It is an inflorescence and not a flower).They are capable of adapting rapidly to their environment, produce large amounts of seed, and are easily dispersed, usually by humans. It bears ray and disk florets, e.g., Dahlia and sunflower. An involurce surrounds the whole inflorescence. Ray florets arise on it in centripetal order. Capitulum : It is called head inflorescence. Unisexual small flowers occur in different groups on the thick axis, e.g., Banana.ДЎ0. Spadix: All the flowers are enclosed in a large bract called spathe. The cup like receptacle bears unisexual flowers on its inner wall, e.g., Ficus.Д©.

Hypanthodium : The flask-shaped receptacle has all the flowers. Catkin : The flowers are sessile and contain only of one type either male or female e.g., mulberry.ДЁ. Umbel: The main axis is short and all the flowers arise from the same point appearing like an umbrella, e.g., coriander.Д§. Spike: The flowers are sessile i.e., have no stalk, e.g.,grasses.Д¦. Corymb : The flowers having varying length of pedicels but come to the same level e.g., cauliflower and candituft.ДҐ. Older flowers are lower (having long stalks) while younger flowers are above (having short stalks), e.g., Gulmohar and larkspur.Д¤. Typical raceme : It is characterized by elongated axis bearing stalked flowers laterally in an acropetal manner. Various type of racemose inflorescence :ДЈ. Cymose : It is further divided into (a) Monochasial Cyme, (b) Dichasial Cyme, В© Polychasial Cyme. (b) Catkin, (c) Spike, (d) Spadix, (e) Corymb, (f) Umbel, (g) Head or Capitulum.Дў. Racemose : This is further divided into (a) Raceme, Inflorescence: An axis bearing a cluster of flower is called an inflorescence.ДЎ.

Cyme inflorescence example