(b) Extra-axillary tendrils-e.g., Cucurbita, Luffa, (c) Leaf-opposed or Apical bud tendrils, e.g., Grapevine (Vitis), (d) Floral bud or Inflorescence tendrils – e.g., Antigonon, Cardiospermum (Balloon vine. These may not necessarily contain a branch. Short Answer Questions-I (3 marks each) 16. Example: Onion (Allium cepa), Garlic (Allium sativum) etc. Root cap has no role in absorption of water, because it has (a) cells arranged loosely (b) no cells containing chloroplast (c) no root hair (d) no direct connection with the vascular system 2. What part of the plant is modified ... Stolon, offset and rhizome are different forms of stem modifications. We have provided Reproduction in Organisms Class 12 Biology MCQs Questions with Answers to help students understand the concept very well. A brightly coloured bract like covering associated with the banana inflorescence is called: Each eye represents a node, bearing one or more buds subtended by a leaf scar (= scale leaf). Like roots, the stems also undergo modifications to perform various special functions. Sub-aerial modifications 3. Learn more about the types, advantages and disadvantages of asexual reproduction only at CoolGyan. (e) Androecium is composed of stamens. Adventitious roots are present either at the base or all over the body. Zone of meristems C. Rootcapzone D. Zone of maturation E. Zone of elongation (a) C, B, E, A, D […] The nodes bear axillary buds, scale leaves and adventitious roots. What is its function? They detach to become new plants. Free PDF download of Important Questions with Answers for CBSE Class 11 Biology Chapter 5 - Morphology of Flowering Plants prepared by expert Biology teachers from latest edition of CBSE(NCERT) books. These help in photosynthesis. A large number of runners are produced by a mother runner in all the directions. Example: Achyranthes. Vegetative propagation is much faster than the sexual reproduction in plants. In subaerial modifications, the stem is partly aerial and partly underground. They produce aerial shoots annually. E.g., Opuntia. Taproot, the main root of a primary root system, growing vertically downward. These are leaves modified into scales or spines to check transpiration. Vegetative propagation may occur naturally through the development of rhizomes. 35. Aerial modifications of Stem. Some of the underground stems are modified for food storage and to survive under unfavourable conditions. Stolon is present in the internodal region, it is aerial, forms an arch and touches the substratum forming nodal region. ... [NCERT class 11, page 11] Choose the correct All Pisces have gills covered by an; All mammals are viviparous. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? Thorns are used as defence organs and help to check transpiration. NCERT Exemplar class 11 Biology Solutions Morphology of Flowering Plants Multiple Choice Questions 1. (With Methods)| Industrial Microbiology, How is Cheese Made Step by Step: Principles, Production and Process, Enzyme Production and Purification: Extraction & Separation Methods | Industrial Microbiology, Fermentation of Olives: Process, Control, Problems, Abnormalities and Developments, The best answers are voted up and rise to the top. How can these modified forms of stem be distinguished from each other? Some underground stem modifications are: These are non-green with distinct nodes and internodes. These are meant for climbing. Detachment of entire branch or a node can develop into a new plant. It is covered with a number of depressions called “eye” and each eye represents a node. After growing aerially for some time it bends downwards to touch the ground, where its terminal bud gives rise to a new shoot and adventitious roots. 56. In this, the leaves are modified into prickles. Here, the terminal bud gives rise to a new stem and adventitious roots.  Many fleshy scale leaves are present. ... NCERT. Thalkudi) etc. A cluster of adventitious roots arise from the base of the bulb. Spines are the modified plant organs. Example: Jasmine, Colocasia. The leaves are produced above and the adventitious roots below. The common stolon bearing plants are Jasmine, Colocasia, and Vellisneria etc. Here, its terminal bud produces a new shoot and adventitious roots. Suckers are the short underground stem branches that arise from the base of an aerial stem.These branches can grow aerially and develop adventitious roots and new suckers at their bases. For example, onion bulbs, tubers of potato, runners/stolon, etc. Khirkoli) terminal bud gets modified into thorn. Ginger, termeric, Cannaetc.). ... Common Example of Rhizopus. … Plants reproduce asexually through their vegetative parts such as leaves, roots, stem, and buds.This is known as vegetative propagation. NCERT Solutions for Class 12 Computer Science (Python) NCERT Solutions for Class 12 Computer Science (C++) ... Nepenthes or the pitcher plant is one such example, which usually grows in shallow water or in marsh lands. E.g., Bouganvillea. Example: Guava, Cucumber, Sunflower. Zig-zag development of inflorescence axis is an example of: a) Helicoid cyme b) Scorpioid c) Umbel d) Compound umbel 36. It is covered by a corry Skin with a number small depressions called eyes’. 1st PUC Biology Plant Kingdom One Mark Questions. Dear student . Get sample papers for all India entrance exams. These are modified vegetative or floral buds with stored food and meant for vegetative propagation. This condensed form of the stem grows in the vertical direction. 4. The stem modifications are as follows: The stem gets modified into a threadlike leafless structure called tendrils. Your email address will not be published. NEET Biology Chapter Wise Mock Test – Morphology of Flowering Plants 1. It originates from leaf axil, grows as a short horizontal branch. 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The nodes have scale leaves, adventitious roots, and auxiliary buds. The various aerial modifications are as follows: Stem or its branches get modified into green thread like leafless structures called tendrils which are meant for climbing. Content Guidelines 2. Answer Now and help others. Although they resemble roots superficially but can be; distinguishable from roots by the presence of following features: (ii) Presence of scale leaves, buds and adventitious roots at the nodes. A good example of a stolon bearing plant is Answer: Jasmine. These are green cylinderical or flattened leaf-like branch of limited growth. Books. NCERT. What part of the plant is modified into a ‘pitcher’? This modification is seen in xerophytic plants and stores water. E.g., Dioscorea. It produces a rosette of leaves above and adventitious roots below. For more information, keep visiting BYJU’S website or download BYJU’S app for further reference. Subaerial modifications of Stem III. Most dicotyledonous plants produce taproots, some of which are specialized for food storage. Before separating from the original plant, it develops adventitious roots and leafy shoots. Such natural stolons are found in Mentha spicata. It arises from the basal part of the main stem. Agropyron. Each stamen represents the male reproductive organ. StudyAdda offers free study packages for AIEEE, IIT-JEE, CAT, CBSE, CMAT, CTET and others. Question from very important topics are covered by NCERT Exemplar Class 11.You also get idea about the type of questions and method to answer in your Class 11th … These are modified axillary vegetative or floral buds meant for food storage. The exemplar has been provided by the National Council of Educational Research & Training (NCERT) and the candidates can check it from below for free of cost. Runners break off and grow into individual plants, and thus help in vegetative propagation. 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