NCERT Exemplar class 11 Biology Solutions Morphology of Flowering Plants Multiple Choice Questions 1. Stolons are produced by virtually all June-bearing strawberry plants and most everbearing and day-neutral strawberry varieties. 3. These are horizontally oriented stem that grow along the soil surface giving rise to roots and aerial branches. It is a fleshy part of the plant which stores food. Garlic is a good example of Answer: bulb. It grows horizontally for a distance under the soil and then emerges obliquely upwards. Rhizomes . The bulbs may be tunicated or scaly. Runners break off and grow into an independent plant giving rise to vegetative propagation. For example, Sweet potato and Dahlia. In horticulture, branches are lowered down to meet the soil where they strike the root. Reproduction is the biological process of producing offsprings that are biologically or genetically similar to the parents. The corm has distinct circular nodes and in ternodes. These are meant for climbing. ... Common Example of Rhizopus. Example – Pistia, Eichhornia. Prickles are superficial outgrowths on the plant. 56. A tunicated bulb is covered by a sheath of dry membranous scale leaves called tunic, e.g., onion and garlic. Your email address will not be published. Where are the pollen grains formed in the flower? These are fleshy, green, and take part in photosynthesis. CoolGyan.Org to score more marks in your examination. Dear student . In Asparagus, the cladodes are one internode long and in Ruscus the cladodes are two internode long. What is the significance of transpiration? What part of the plant is modified ... Stolon, offset and rhizome are different forms of stem modifications. Short Answer Questions-I (3 marks each) 16. A mother plant often produces a number of runners in all direction. When a permanent change occurs in the structure of stems to perform new functions suitable for the environment, it is called as a ‘stem modification’. Zone of meristems C. Rootcapzone D. Zone of maturation E. Zone of elongation (a) C, B, E, A, D […] An aphid, giving birth to a live young by parthenogenesis is shown in … It produces a rosette of leaves above and adventitious roots below. Content Guidelines 2. Banana and Alocasia indica are some examples of the rhizome. These help in photosynthesis. 18. Privacy Policy3. Sebati), Musa (banana), Mentha (Or podina), strawberry, pineapple etc. Exam. Some of the most important types of modifications of stem are as follows: I. The time of birth to common death of a living being is called Life Traverse. A. Root hair zone B. We have provided Reproduction in Organisms Class 12 Biology MCQs Questions with Answers to help students understand the concept very well. Mentha sp.(mint). E.g., Jasmine. What is a mushroom shaped gland? 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. The plants are commonly known as creepers and their subaerial stem modifications meant for vegetative propagation. Disclaimer Copyright, Share Your Knowledge These are brownish in colour. Mint is an example of stolon. The nodes have scale leaves, adventitious roots, and auxiliary buds. It is a type of phylloclade which consists of only one internode. Stolon is a modification of stem which is also known as runner. The nodes bear axillary buds, scale leaves and adventitious roots. An underground runner is known as sobole. These are modified vegetative or floral buds with stored food and meant for vegetative propagation. The auxiliary buds are present on the sides. In other plants, the initial taproot of the seedling is replaced by a fibrous, or diffuse, root system. Example: Strawberry plant. TOS4. It originates from leaf axil, grows as a short horizontal branch. 1st PUC Biology Plant Kingdom One Mark Questions. This can be done artificially as well, which is widely employed in horticulture. These are leaves modified into scales or spines to check transpiration. Thorns can be distinguished from spines and prickles as they are deep-seated with vascular connections. 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 largely used as food and grow very slowly. Your email address will not be published. (e) Androecium is composed of stamens. A good example of a stolon bearing plant is Answer: Jasmine. What is its function? It moves horizontally under the soil for a distance and then grows obliquely upwards. Taproot, the main root of a primary root system, growing vertically downward. It is a highly condensed discoid stem its upper surface a terminal bud and many fleshy scale leaves are present. Bougainvillea) and check transpiration. Adventitious roots arise from the lower side. Some of the underground stems are modified for food storage and to survive under unfavourable conditions. NCERT. Khirkoli) terminal bud gets modified into thorn. E.g., Mentha, These grow aerially for some time and then bend downwards to touch the ground. A scaley bulb contains no tunic. It arises from the basal part of the main stem. Underground modifications of Stem II. E.g., Dioscorea. E.g., Colocasia. Stem tuber is a swollen tip of an underground lateral Stem (Stolon). Before sharing your knowledge on this site, please read the following pages: 1. Stem: Terms, Surface and Forms (With Diagram), Leaf: Characteristics, Types, Duration and Insertion. A stolon is a plant propagation strategy and the complex of individuals formed by a mother plant and all its clones produced from stolons form a single genetic individual, a genet. After growing aerially for a while it bends downwards to touch the ground. Detachment of entire branch or a node can develop into a new plant. The n ides bear scale leaves and axillary buds. 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. The rhizome rootstock grows vertically upwards instead of horizontal. The accompanying table demonstrates the life ranges of a couple of living creatures.Table: Life Spans of some living beings E.g., Pistia. What part of the plant is modified into a ‘pitcher’? In subaerial modifications, the stem is partly aerial and partly underground. The stems are modified into aerial forms to perform important functions such as climbing, food storage, vegetative propagation, and protection. Morphology Edit These stolons from the corm of a Crocosmia are stems that emerged from axillary buds at the nodes of the tunic leaves . Spines are the modified plant organs. It is the axis of the flower and contains the flower organs such as calyx, corolla, androecium, and gynoecium. … The terminal bud gets modified into thorns. Get sample papers for all India entrance exams. 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. Before separating from the original plant, it develops adventitious roots and leafy shoots. It is a short runner with one internode in length. Silene exhibits clear nodes and internodes. They detach to become new plants. Subaerial modifications of Stem III. Runner is a fast growing stem that grows on the surface of the soil.They develop into a new plant. (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. Stolon: It's a weak lateral stem that rises from the main stem base. It contains objective, very short answer type, short answer type, and long answer type questions. The leaves are modified into spines or scales to check transpiration. Offset: This is a short runner with one lone internode. It originates from the axis of the leaf and grows horizontally. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. This modification is seen in xerophytic plants and stores water. Question 1. They undergo vegetative propagation to form a new plant. 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. Vegetative Propagation by Stems. NCERT solutions for class 11 biology chapter 5 morphology of flowering plants: This chapter will tell you that flowering plants exhibit enormous variation in shape, size, structure, mode of nutrition, life span, habit, and habitat and they have well-developed root and shoot systems. 57. Many plants produce underground stems for perennation and food storage. The weak sub-aerial stems are modified into following four types: It is a creeping stem with long internodes, running horizontally on the soil surface. ... page 77, NCERT Text Book of Biology for Class XI. The nodes bear dry scale leaves with axillary buds. What are the general characters of bryophytes? The common stolon bearing plants are Jasmine, Colocasia, and Vellisneria etc. Wild strawberry is an example of . Name the types of nitrogenous bases present in the RNA. It is shorter and thicker and is found in aquatic plants. NEET Biology Chapter Wise Mock Test – Morphology of Flowering Plants 1. In certain plants, the aerial stem or buds get modified to perform special functions like climbing, protection, food storage, vegetative propagation etc. Underground stem modifications The stem helps in providing structure and support to the plant. Click here to view, download or print flexiprep exclusive NCERT Class 11- Biology: Chapter –5 Morphology of Flowering Plants Part 6. For example, onion bulbs, tubers of potato, runners/stolon, etc. Example: Achyranthes. Thus we see how the stem is modified according to the functions it performs. Aerial stem modifications 2. Wild strawberry is an example of . In Citrus, Duranta and Aegel thorns are modified axillary buds; in Carrissa (Or. 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. This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. 4. (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. The lower part of the potato gets covered by the earth where the adventitious branches grow. (iii) Internal structure resembles that of aerial stem and not of root. कक्षा 10 की NCERT पुस्तके Hindi तथा English Medium; ... Stolon. Short aerial branches and adventitious roots develop at the nodes. How can these modified forms of stem be distinguished from each other? Rhizomes are modified stems that typically grow horizontally along the surface of or beneath the ground.Rhizomes are storage sites for growth substances such as proteins and starches.As rhizomes extend, roots and shoots may arise from segments of the rhizome and develop into new plants. It is a short runner with one internode long. Answer Now and help others. An underground runner is called sobole, e.g. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 11.. Terminal buds also present. These are green cylinderical or flattened leaf-like branch of limited growth. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? It is more or less spherical with a flattered base. A sheath of dry membranous scale leaves covers the tunicated bulb. Here, its terminal bud produces a new shoot and adventitious roots. It is covered by a corry Skin with a number small depressions called eyes’. StudyAdda offers free study packages for AIEEE, IIT-JEE, CAT, CBSE, CMAT, CTET and others. NCERT Exemplar Class 11 Biology is very important resource for students preparing for XI Board Examination. and when grow horizontally is called straggling rhizome [e.g. It is spherical in shape with a flattened base. Question 3. Key Terms. These are seen in xerophytic plants like Opuntia, Euphorbia, Casuarina, Cocoloba etc. The coherence of life on earth is accomplished by the procedure of reproduction. The common sucker-bearing plants are Chrysanthemum (Or. A cluster of adventitious roots arise from the base of the bulb. The number of ends in a glycogen molecule would be (a) equal to the number of branches plus one (b) equal to the number of branch points (c) one (d) two, one on the left side and another on the right side. Welcome to BiologyDiscussion! It arises from the basal, underground part of the main stem. The stem modifications are as follows: The stem gets modified into a threadlike leafless structure called tendrils. Eg., Asparagus. It is a condensed form of rhizome growing in vertical direction. NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless. A sterile stamen is called staminode. In Dioscorea, bulbils are condensed axillary buds while in Agava and lily the floral buds develop into bulbil. Books. It is a condensed stem axis that bears words of floral organs -calyx, corolla, androecium and gynoecium. E.g., onion, garlic. Example: Palm, Colocasia. This leaf, if given the optimal temperature, will start photosynthesising. Lateral branches emerge from the base of the main stem, they initially grow upward and then arch down to develop new plants. Some common example of rhizopus species are: Rhizopus Arrhizus: They help in production of alcoholic beverages ... NCERT Book Solutions. Each stamen represents the male reproductive organ. MORPHOLOGY OF FLOWERING PLANTS 2525252525 in shallow water or in marsh lands. Stolon arises from the base of the main stem. These may be branched or un-branched. … Describe various stem modifications associated with food storage, climbing and protection. class 12 class 11 class 10 class 9 class 8 class 7 class 6. A large number of runners are produced by a mother runner in all the directions. In these kinds of plants, the stem is partly above the ground and partly below the ground. It does not contain adventitious roots. The rhizome that grow obliquely is called root stock rhizome (e..g., Alocasia, Dryopteris, Banana etc.) BIOLOGY, EXEMPLAR PROBLEMS 3. 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. The leaves are produced above and the adventitious roots below. The base of the bulb consists of a cluster of adventitious roots. Runners break off and grow into individual plants, and thus help in vegetative propagation. 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. Example – Ginger Turmeric. stolon: a shoot that grows along the ground and produces roots at its nodes; a runner; tuber: a fleshy, thickened, underground stem of a plant, usually containing stored starch, as for example a potato or arrowroot; cladode: green branches of limited growth which have taken up the functions of photosynthesis; rhizome: a horizontal underground stem of some plants that sends out … Roots developed from parts of … NCERT Solutions. They take part in photosynthesis and store water. For more information, keep visiting BYJU’S website or download BYJU’S app for further reference. E.g., ginger. Stolon, offset and rhizome are different forms of stem modifications. NCERT Solutions for Class 12 Maths. Ginger, termeric, Cannaetc.). It has distinct nodes and internodes. These are modified into: It is a creeper that runs horizontally on the surface of the soil. These are cylindrical but non-fleshy. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Zig-zag development of inflorescence axis is an example of: a) Helicoid cyme b) Scorpioid c) Umbel d) Compound umbel 36. Which organelle is known as “power house” of the cell? ... NCERT.  Many fleshy scale leaves are present. Vegetative propagation may occur naturally through the development of rhizomes. Give one example of each. No individual is everlasting with the exception of unicellular living being on account of it proceeds with its life traverse in descendants by fission. Our mission is to provide an online platform to help students to share notes in Biology. Sub-aerial modifications 3. It is fleshy, non-green underground stem. They produce aerial shoots annually. Thorns are used as organs of defence or climbing (e.g. Vegetative propagation occurs through stems when new plants arise from the nodes. These sprouts can be separated from the parent plant and when planted in other areas, new plants are formed. Stolon: It is a weak lateral branch that arises from the base of main stem. Spadix is a special type of spike having a fleshy peduncle and a large brightly coloured bract called spathe. Question 2. Learn more about the types, advantages and disadvantages of asexual reproduction only at CoolGyan. (b) Stolon — Pistia (c) Runner — Jasmine (d) Sucker — Chrysanthemum. Offsets art generally found in aquatic plants like Pistia (water lettuce), Eichomia (water hyacinth), Houseleek etc. The common stolon bearing plants are Jasmine, Colocasia, and Vellisneria etc. ... [NCERT class 11, page 11] Choose the correct All Pisces have gills covered by an; All mammals are viviparous. Example: Onion (Allium cepa), Garlic (Allium sativum) etc. Nepenthes or the pitcher plant is one such example, which usually grows 18-04-2018. Some underground stem modifications are: These are non-green with distinct nodes and internodes. E.g., Bouganvillea. 1st PUC Biology Plant Kingdom Additional Questions and Answers. Examples – C-Cynodon (Lawn grass), Oxalis (Wood sorrel), Centella (Or. It is modified into three important types: Some underground stems are modified for food storage and to survive under unfavourable conditions. A brightly coloured bract like covering associated with the banana inflorescence is called: Most dicotyledonous plants produce taproots, some of which are specialized for food storage. Why do lymph nodes often swell and become tender or even painful when you are sick? Adventitious roots are usually absent e.g., Potato. Mint plant reproduces both vegetatively and through seeds. 35. This condensed form of the stem grows in the vertical direction. E.g. In this, the leaves are modified into prickles. Dear candidate Mint is an example of stolon because these have horizontal orientation on the stem and grow along the soil surface ie., they grow horizontally but jasmine is not stolon it is a runner because of the reason that it grows above the ground which means runner is a type of stolon and runner spread on the surface of the ground and grows over the soil. Stolon is present in the internodal region, it is aerial, forms an arch and touches the substratum forming nodal region. Runner arises from an axillary bud. Rearrange the following zones as seen in the root in vertical section and choose the correct option. 4. Thorns are used as defence organs and help to check transpiration. There are auxiliary as well as apical buds. Based on their nature, stem modifications are of three types namely, 1. This is done by controlling the growth of the leaves. It is covered with a number of depressions called “eye” and each eye represents a node. A scale leaf is always present at the point of branching of the tendril. Such natural stolons are found in Mentha spicata. These may not necessarily contain a branch. Candidates can download NCERT Exemplar Class 11 Biology Chapter 5 from this page. A scaly bulb is without any tunic, e.g., Lily. They help in photosynthesis. The common types of rhizomes are fleshy due to the storage of food material. E.g., C-Cynodon. Like roots, the stems also undergo modifications to perform various special functions. Plants reproduce asexually through their vegetative parts such as leaves, roots, stem, and buds.This is known as vegetative propagation. Potato is the most common tuber largely used as food. It develops a leafy shoot and adventitious roots before separating from the mother plant. Some of the underground stem modifications are: CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, 11Th State Board Botany Important Questions, CBSE Previous Year Question Papers Class 10 Science, CBSE Previous Year Question Papers Class 12 Physics, CBSE Previous Year Question Papers Class 12 Chemistry, CBSE Previous Year Question Papers Class 12 Biology, ICSE Previous Year Question Papers Class 10 Physics, ICSE Previous Year Question Papers Class 10 Chemistry, ICSE Previous Year Question Papers Class 10 Maths, ISC Previous Year Question Papers Class 12 Physics, ISC Previous Year Question Papers Class 12 Chemistry, ISC Previous Year Question Papers Class 12 Biology. 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