Answer: (1) Family Fabaceae/Papilionaceae (pea plant) Fabaceae/Papilionaceae is a sub-family of the Leguminoseae family. Answer. Gynoecium : Gynoecium is the female reproductive part of the flower and is made up of one or more carpels. In palmately compound leaf, the leaflets are attached at a common point, i.e., at the tip of petiole, as in silk cotton. These video classes have been designed to suit the curriculum of CBSE Class 11 students and NEET. 1. Trick To Learn Floral Formula And Diagrams Of Family Fabaceae Neet Important Questions Of Morphology Of Flowering Plants Zigya Essay Families Of Monocotyledons Angiosperms Botany A Name The Families To Which These Plants Belong Cbse Class 11 Solanaceae Liliaceae And Fabaceae Family An Overview Distinguish Between Families Fabaceae Solanaceae Liliaceae On Th Solanaceae … A flower is a modified shoot wherein internodes do not elongate and the axis gets condensed. Soln. | NCERT solution | Class 11 Biology | Unit-5 Morphology of Flowering Plants Biology (A) Marginal placentation. Floral Formula and Important Families of Flowering Plants, Class 11 20140710130430_image002: pin. A sterile stamen is called staminode. The ovary in which the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on two separate rows is known to have marginal placentation. (a) Banyan tree Draw a floral diagram of the liliaceae with floral formula . It may show following types of modifications: Here ovary is half superior, e.g., peach, plum. Leaves: alternate, simple, rarely pinnately compound, exstipulate; reticulate venation. The number of floral parts are indicated along with symbols at the base of a floral diagram and their union by showing a bracket. Write the floral formula for Asparagus. Inflorescence: racemose. Floral features: Inflorescence: Racemose, generally axial than terminal (b) flowers may get modified into fleshy buds or bulbils, (c) A transition from foliage leaves to floral leaves is found in Paeonia. Inflorescence: Racemose- terminal or axillary raceme; Cymose- solitary in Solanum. The study of various external features of the organism is knownas morphology. The number, position, arrangement or distribution of placentae inside an ovary is called placentation. (d) Nymphaea shows transition from sepals to petals and petals to stamens, (e) In Passiflora and Cleome long intemodes occur below gynoecium and stamens. Flower : bisexual, zygomorphic, irregular, hermaphrodite, white or pink, complete, hypogynous to perigynous. (c) Apocarpous and syncarpous ovary CBSE Class 11-science - Ask The Expert. Pulses are rich in proteins. The angiosperms are characterized by presence of roots, stems, leaves, flowers and fruits. It also furnishes information regarding symmetry, sexuality […] Stamens are … Each anther is usually bilobed and each lobe has two chambers, the pollen-sacs. Placentation refers to the arrangement of ovules inside the ovary. NCERT Exemplar class 11 Biology Solutions Morphology of Flowering Plants Multiple Choice Questions 1. Corolla : Petals 5, polypetalous, papilionaceous, descending i… 13. It is meant for sexual reproduction. In floral formula sign G_1 indicates: MEDIUM. (ii)Sub-aerial modifications (c) Sucker: Suckers are formed from the node of underground stem. 2. (c) Actinomorphic : When flower can be divided into equal radial halves in any radial plane passing through the centre, it is said to be actinomorphic, e.g., mustard, Datura etc. aestivation. How do the various leaf modifications help plants? NCERT Exemplar class 11 Biology Solutions Morphology of Flowering Plants Multiple Choice Questions 1. (d) Bulb: In bulb the stem is highly reduced and can be seen only as a disc-like structure bearing numerous fleshy scaly leaves, e.g., Allium cepa (onion), Allium sativum (garlic) etc. Stamens can be free or fused by their filaments (adelphous condition), anthers (syngenesious) or both (synandrous). Take one flower each of the families Fabaceae and Solanaceae and write its semi-technicaldescription. Floral Characters. Calyx: Sepals 5, gamosepalous, persistent (in the fruit condition also) valvate aestivation. In the hypogynous flower the gynoecium occupies the highest position while the other parts are situated below it. Meaning of Floral Formula: It is a symbolic and numerical representation of various floral parts. The calyx may be gamosepalous (sepals united) or polysepalous (sepals free). Petunia belongs to Solanaceae which have branched taproot, herbaceous or woody, branched stem and simple pinnate leaves that are arranged alternately. (iv) Solanaceae: type – Datura Points to be focused on: • Floral characteristics of dissection of flowers. A flower having bract at its tip is called bracteate and without bracts is called ebracteate. Family: Solanaceae - definition. In some flowers like lily, the calyx and corolla are not distinct and are termed as perianth. After fertilisation, the ovules develop into seeds and the ovary matures into a fruit. Calyx : sepals five, gamosepalous, persistent, valvate aestivation. A number of runners arise from one erect shoot which spread in different directions. Morphology of Flowering Plants Class 11 Notes Download in PDF Morphology:. (v)Basal placentation: The placenta develops at the base of ovary and a single ovule is attached to it, as in sunflower, marigold. (ii)Leaf spines: Either for the protection of plant or to lessen the rate of transpiration in xerophytic plants, the leaves modify into sharp, pointed spines. Class Subclass Series Order Family 9.Take one flower each of the families Fabaceae and Solanaceae and write their semi-technical description. Calyx with 5 sepals, gamosepalous, valvate aestivation. Mention which aspects of flower cannot be represented in the floral diagram What does a dot represent in a floral diagram? (c) Corm: This is a spherical, Gynoecium : ovary superior, monocarpellary, unilocular with many ovules, marginal placentation, style bent and long, stigma simple and-hairy. Describe the gynoecium of … Corolla:petals five, united, valvate aestivation. The etymology of the Latin word is unclear. Also, draw their floral diagrams after studying them. CLASS XI (2020 -21) (THEORY) Time:3 ... fruit and seed. (d) Cladode: It is similar to phylloclade with only one internode, e.g., Asparagus. Floral formula and floral Diagram of Solanaceae. Take one flower each of families Fabaceae and Solanaceae and write its semi-technical description. 6.Differentiate between Solanum tubersum (potato-white or Irish potato): It is an important plant in this family. Morphology of Flowering Plants - Morphology is the study of the form and structure of organisms and their specific structural features. Class 11 Biology Experiments: A: List of Experiments 1: Study and description of three locally available common flowering plants, one from each of the families Solanaceae, Fabacceae & Liliaceae including dissection and display of floral whorls, anther and ovary to show number of chambers. Soln. Flower: Ebracteate, actinomorphic, bisexual, pedicellate, heterochlamydeous, hypogynous. Also draw their floral diagram after studying them. Calyx : sepals five, gamosepalous, ascending, imbricate aestivation, campanulate calyx tube. (b) Root modification in turnip : The 3.How is a pinnately compound leaf different from a palmately compound leaf? Floral formula :   (b) Rhizome: It is a branched, prostrate horizontally growing stem having nodes and internodes. Soln.Leaves perform various functions besides photosynthesis and thus they are modified into different forms such as – They perform defensive function. (i)Underground modifications of stem are discussed as follows: Stigma is the terminal part of the pistil which is specialized to receive and nourish the pollen grains. The correct floral formula of soybean is. It has condensed nodes and internodes. They help to get oxygen for respiration. Vegetative Features: They also act as organs of perennation to tide over conditions unfavourable for growth. Draw floral diagrams from these formulae. Exercise 11 Aim: Study and describe flowering plants of families Solanaceae, Fabaceae and Liliaceae. label! The pollen grains are produced in pollen-sacs. C. Soybean or Glycine max is a member family Fabaceae, subfamily-phpilionidae. (d) Offset: Stem consists of thick and short intemodes. 8.Describe modifications of stem with suitable examples. answr. Soln.Family Fabaceae (e.g., Pisum sativum) Systematic position: Zone of meristems C. Rootcapzone D. Zone of maturation E. Zone of elongation (a) C, B, E, A, D […] Mention which aspects of flower cannot be represented in the floral diagram What does a dot represent in a floral diagram? Its floral formula is. Root: tap, branched, with root nodules. The shape and colour of corolla vary greatly in plants. Vegetative propagation takes place by means of these. When a shoot tip transforms into a flower, it is always solitary. View Answer. The family belongs to the order Solanales, in the asterid group and class Magnoliopsida (dicotyledons). A flower may be trimerous, tetramerous or pentamerous when the floral leaves of each whorl are in … Gynoecium : bicarpellary, syncarpous, axile placentation is: 15.Describe the arrangement of floral members in relation to their insertion on thalamus. The stem modifies into green fleshy leaf-like Description of families: Fabaceae, Solanaceae and Liliaceae (to be dealt along with the relevant experiments of the Practical ... floral whorls, anther and ovary to show number of chambers (floral formulae and floral diagrams). ADVERTISEMENTS: In this article we will discuss about:- 1. MEDIUM. Top educators are teaching live on Unacademy Plus. For Class XI Strictly in accordance with the latest core syllabus ... Solanaceae, Fabaceae and Liliaceae including dissection and display of floral whorls, anther and ovary to show number of chambers (floral fomulae and floral diagrams). They may be of following kinds. The Solanaceae, or nightshades, are a family of flowering plants that ranges from annual and perennial herbs to vines, lianas, epiphytes, shrubs, and trees, and includes a number of agricultural crops, medicinal plants, spices, weeds, and ornamentals. (a)Tuber: It is the branch of main stem which accumulates or stores food in it and swells up, e.g., Solarium tuberosum (potato). Hence, the ovary is said to be inferior as in flowers of guava and cucumber, and the ray florets of sunflower. Soln.Roots of some plants change their shape and structure and become modified to perform certain functions other than absorption and conduction of water and minerals. 11.2 & 11.3). Also draw their floral diagrams after studying them. A aestivation . The petioles in these plants expand, become green and synthesise food. (vi)Leaf roots : A leaf transforms into roots for balancing on water e.g., Salvinia. Trueman Solutions for Class 11 Biology I Chapter 5. On the nodes sessile scale leaves are formed, e.g., Carina, Zingiber officinale (ginger), Curcuma domestica (turmeric) etc. Parts of leaf modified into leaf spines include stipules e.g., Zizyphus; leaf margins e.g., Argemone; leaf apex e.g.r Yucca; entire leaf e.g., Berberis. A flower may be trimerous, tetramerous or pentamerous when the floral leaves of each whorl are in … (ii) Subaerial modifications : Subaerial part of stem grows horizontally on the ground while some part remains underground. 11th Class Biology Morphology of Flowering Plants (Root, Stem And Leaf) question_answer 1) Distinguish between families - Fabaceae, Solanaceae, Liliaceae … In a typical flower, the floral members like calyx, corolla, androecium and gynOecium are arranged over the thalamus! How to Read Floral Formula?. A flower without a stalk or pedicel is called sessile and a flower having a stalk is called pedicellate. (iii)Parietal placentation : The ovules develop on the inner wall of the ovary or on peripheral part. Family – Fabaceae Your email address will not be published. (b) Fibrous root and adventitious root ovary, obliquely placed carpels in the flower, bilocular, axile placentation, placenta swollen with many ovules. modification of root found in turnip is napiform for food storage. Petals may be free (polypetalous) or fused (gamopetalous). (ii)Axile placentation : When the placenta is axial and the ovules are attached to it in a multilocular ovary, the placentation is said to be axile, e.g., china rose, tomato and lemon. It is distributed all over the world. Writing Floral Formula When one begins to write the formula, start with bract and bracteole, moving to symmetry and sexuality of flowers and then specifying the floral parts – calyx, corolla, androecium, and gynoecium. The underground stems can be distinguished from roots externally by the presence of nodes and internodes, axillary buds, scale leaves etc. It possesses cymose inflorescence. Solanaceae floral formula & Flowers of Solanaceae: pin. The main type of aestivation are valvate, twisted, imbricate, and vexillary. 0 0 0 0. by Mathew Lyson. Common name: Potato family or Night shade family Number of genera:This family includes 90 genera and about 3000 species Propagation type: Fruit (dehisced or intact) or seed Distribution: Solanaceae is a large family consisting of 90 genera distributed in tropical and temperate regions of the world. Order – Rosales (viii)Leaf bladder: The leaves modify to form bladder like structure which trap insects and then it is closed by a valve present on the mouth of bladder e.g., Utricularia (bladderwort). Login. Also draw their floral diagram after studying them. Zone of meristems C. Rootcapzone D. … Soln. • Cut vertical section of the flower • Floral diagrams • Floral formula • T.S. (ix) Leaf tentacles: The leaf of sundew plant, Drosera bear minute hairs which have shinning, sticky substance at their tips (tentacles). Food: Many plants of this family are used as food. (iii) Floral Formula represents flowers of Malvaceae family. (iv)Free central placentation : When the ovules are borne on central axis and septa are absent, as in Dianthus and primrose the placentation is called free central. Family - Solanaceae . Rearrange the following zones as seen in the root in vertical section and choose the correct option. In racemose type of inflorescence, the main axis continues to grow, the flowers are borne laterally in an i cropetal succession. Also draw their floral diagrams after studying . A flower having bract at its tip is called bracteate and without bracts is called ebracteate. 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