Question 2. Biology. Complex tissues consist of parenchyma and sclerenchyma cells. Each chromosome gets attached to a spindle fibre by its centromere which is known as the chromosomal fibre. Study Material and Notes of Ch 6 Plant Tissues Class 9th Science. The blood and the lymph are the fluid connective tissues which link different parts of the body. (d) guard cells (a) uterus, Question 7. Answer: They store food and nutrients in vacuoles. Pits are prominent and seen along the walls. Lumen is filled with wall materials. 20 minutes ago by. We have already studied in the fundamental unit of life class 9 notes that the tissues are composed of cells. (b) hydrophytes Parenchyma is a type of (a) Complex tissue (b) Simple tissue (c) Xylem (d) Phloem. Phloem like xylem is a complex tissue and consists of the following elements. Functions of parenchyma: They provide mechanical support to the plant body. Meiosis is important as it produces gametes i.e., male or female germ cells. 2. Extra Questions for Class 9 Science Chapter 6 Tissues with Answers Solutions. Why should gametes be produced by meiosis during sexual reproduction? The key difference between chlorenchyma and aerenchyma is that chlorenchyma is a specialized parenchyma tissue that contains chloroplasts and carries out photosynthesis while aerenchyma is a spongy tissue that contains large air spaces.. Parenchyma tissue is one of the three types of ground tissues in plants. It forms delicate lining of the buccal cavity, alveoli of lungs, proximal tubule of kidneys, blood vessels and covering of the skin and tongue. Many nerve fibres are bound together by the connective tissue. Complex tissues are made of more than one type of cells that work together as a unit. Collenchyma Which are not true cells in the blood? They are mainly involved in secretion and absorption. Therefore only if gametes are produced, fertilization can take place. Question 3. Answer: In unicellular organisms; all the functions are performed by a single cell. Ans: A group of cells that are similar in structure and functions grouped together to form a tissue. Tissues Class 9 MCQ/Objective questions NCERT Science Chapter 5. They engulf or destroy foreign bodies and neutralize their harmful effects. Fibres are abundantly found in many plants. Cuboidal Epithelium is composed of single layer of cubical cells. 9th grade . It is found lining the stomach, gall bladder, bile duct, small intestine, colon, oviducts and also forms the mucous membrane. Answer: Function of Collenchyma Cells. Tracheids, vessels, wood fibres and parenchymatous tissues are found in (a) xylem (b) cambium (c) cortex (d) phloem Ans : (a) xylem Xylem (wood) is a complex permanent tissue … (b) Lymph: Lymph is a colorless fluid filtered out of the blood capillaries. Companion cells are closely associated with …………………….. They have large lumen without any content. Cells individually cannot perform all the tasks of an organism. In text Question Chapter 6 Class 9 Science Tissue Ncert Solutions . It is the simplest mode of cell division and occurs in unicellular animals, aging cells and in foetal membranes. Why is "endarch" supposed to be the arrangement of stem and not roots . Pinus or at the base of intemodes e.g. Answer: A division of labour is necessary to attain specialization of tasks. The supporting or skeletal connective tissues form the endoskeleton of the vertebrate body. Answer: Question 2. Aerenchyma is found in ……………………… NCERT Solutions Class 9 Science Tissues. How do they differ from other meristems? Privacy: Your email address will only be used for sending these notifications. (d) dendrites Question 6. Blood platelets: They are minute, anucleated, fragile fragments of giant bone marrow called megakaryocytes. Chlorenchyma: Parenchyma with chlorophyll which performs photosynthesis is called as chlorenchyma. (c) xylem, Question 5. Neurons are the structural and functional units of the nervous tissue. (a) Parenchyma Answer: 1. Cells are usually loosely packed with large intercellular space. P.S.Verma and V.K.Agarwal Solutions for Class 9 Biology CBSE, 3 Tissues. The fibers consists of …………………… They are arranged in longitudinal series in which the partitioned walls (transverse walls) are perforated, and so the entire structure looks-like a water pipe. It is found either at the base of leaf e.g. Sometimes a portion of the epithelial tissue folds inward to form a multicellular gland, which lines the gastric glands, pancreatic tubules and intestinal glands. The cells are compactly arranged with little intercellular spaces. Permanent tissues differe from meristematic tissue in (a) Inability to divide (b) attainment of definite shape and size (c) performing a distinct function (d) all the above . (ii) Xylem fibers: These cells are elongated, lignified and pointed at both the ends. It is also found in the intestine and tubular part of the nephron (kidney tubules) as microvilli that increase the absorptive surface area. Question 5. CBSE Class IX Science NCERT Solutions, Science Class 9 Tissues Chapter 6 Solutions. Answer: During meiosis a germ cell or gamete divides to make four new sex cells. Answer: …………… tissues provides mechanical support to organs. Question 1. The average length of fibres is 1 to 3 mm, however in plants like Linum usitatissimum (flax), Cannabis sativa (hemp) and Corchorus capsularis (jute), fibres are extensively longer ranging from 20 mm to 550 mm. These cells are devoid of protoplast. Write about the elements of Xylem. (d) None of the above In aquatic plants. Sclereids are widely distributed in plant body. They support the body, protect various organs and help in locomotion. The chromosomes align in an equatorial plate during metaphase stage of mitosis. 9th grade . Functions: They provide mechanical support for growing organs. They contain granules that can secrete other proteins required for creating a firm plug to seal blood vessel breaks. A group of similar cells performing a particular function is: a. They contain a respiratory pigment called hemoglobin which is involved in the transport of oxygen to tissues. It takes part in growth. Parenchyma are simple permanent tissue composed of living cells. Collenchyma cells provide structural support, protecting the plant by serving as an inner framework, much like bones do for humans and other animals. Each neuron consists of a cell body or cyton with nucleus and cytoplasm. (d) All of the above Vascular Bundles. INTEXT QUESTIONS AND ANSWERS. Intercalary meristem lies between the region of permanent tissues and is part of primary meristem which is detached due to formation of intermittent permanent tissues. In case of aquatic plants, parenchyma is modified into aerenchyma. Nerve cell does not contain ……………………… It is differentiated into 2 parts: Palisade - This tissue has columnar cells arranged at right angles to the upper surface of the leaf. Fibres are elongated sclerenchymatous cells, usually with pointed ends. Answer: Question 1. The elongated and slender processes of the neurons are the nerve fibres. Played 0 times. (a) Parenchyma, Question 2. (d) None of the above Squamous Epithelium is made up of thin, flat cells with prominent nuclei. CBSE Class 9 Science Notes on Tissues. (c) trichomes Give reasons why the meristematic cells have a large nucleus and dense cytoplasm. 5) The function of organism is the total sum of activities & interactions of constituent cells. 3. State its function. Find video lessons, quizzes, notes, ncert solutions and more for Class 9 Science @learnfatafat.com ... Chlorenchyma prepares food during photosynthesis; ... Function(s): Passes signals to body parts in small time and helps to perform action instantly. Sclerenchyma consists of thick-walled cells which are often lignified. Get chapter notes for CBSE Class 9 Science, chapter 6: Tissues (Part-I). Aerenchyma: In aquatic plants, cells of parenchyma have large air cavities to give buoyancy to the plant and is called aerenchyma . (ii) Collenchyma 5. Their ends are tapering, blunt or chisel-like. (a) uterus ... Tissues Tissues are a group of cells that combine together to perform a particular function. 0% average accuracy. ... Chlorenchyma, B: Sclerenchyma Collenchyma, B- Chlorenchyma. veronica_katta_77550. To know more about Tissues, visit here. These cells are dead as these do not have protoplast. CBSE Class 9 - Science - CH6 - Tissues (Worksheet) Tissues (Worksheet) ... . Question 4. Describe fluid connective tissue. (iii) Xylem vessels: They are long cylindrical, tube like structures with lignified walls and wide central lumen. Muscles, organs and blood are all tissues formed by the grouping of cells. Follow these notes … GSEB Solutions for Class 9 Science and Technology – Plant Tissue (English Medium) GSEB SolutionsMathsScience Exercise 77: Solution 1.1: D. Complex tissue Tissues containing more than one type of cells are known as complex tissue. (c) Tendons, IV. (b) vessel elements WBC’s are of two types. chlorenchyma. What is skeletal connective tissue? The cells of chlorenchyma tissues contain chloroplasts and hence perform the function of photosynthesis. Simple Tissues: When exposed to light, parenchyma cells may develop chloroplasts and are known as Chlorenchyma. The study of tissues is known as histology. They are usually broad, may occur in single or in groups. Chapter-6. They are capable of amoeboid movement and play an important role in body’s defense mechanism. The nucleus is round and lies in the centre. It is seen in the trachea of wind-pipe, bronchioles of the respiratory tract, kidney tubules and fallopian tubes of oviducts. (i) Parenchyma Organ b. (a) sieve elements, Question 4. They are. Question 1. These notes are prepared in simple and easy language. Class 9 Science Chapter 6 Extra Questions and Answers Tissues. (a) epiphytes Agranulocytes (without granules in the cytoplasm): lack cytoplasmic granules and include the lymphocytes which have a spherical nucleus and the monocytes which have a large nucleus indented on one side. This tissue is present in the thyroid vesicles, salivary glands, sweat glands and exocrine pancreas. It provides structural framework and gives support to different tissues forming organs. Tissues Class 9 Extra Questions Very Short Answer Type. Common examples are xylem and phloem. They play an important role in the blood clotting mechanism. (i) Xylem tracheids: They are elongated or tube-like dead cells with hard, thick and lignified walls. At times, they become meristematic partially or wholly. They are non-vascular and composed of simple, living and undifferentiated cells, which are modified to perform various functions. The vascular bundles are arranged in three layers, developing unequally at different levels. eVidyarthi. 7. Chapter-wise NCERT Solutions For Class 9 Science Chapter 6 Tissues (Biology) solved by Expert Teachers as per NCERT (CBSE) Book guidelines. Question 4. (a) Blood: contains corpuscles which are red blood cells (erythrocytes), white blood cells (leucocytes) and platelets. For example, in Amoeba, a single cell carries out movement, intake of food and respiratory gases, respiration and excretion. Their main function is secretion and absorption. (a) axon Sclereids are isodiametric, with liginified walls. They are the longest cells of the body. Name any two types of simple permanent plant tissues. Functions: Parenchyma may store water in many succulent and xerophytic plants. Answer: To avoid this verification in future, please, Structural Organisation in Animals and Plants. ... Differentiate between aerenchyma and chlorenchyma. Sclerenchyma cells are grouped into, Question 2. Filed Under: Class 9, NCERT Solutions, Science Tagged With: Chapter 6, class 9, NCERT Solutions, science, Tissues About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. Required fields are marked *. Sclereids are also common in fruits and seeds. 6. Samacheer Kalvi 9th Science Book Solutions, Samacheer Kalvi 11th Bio Botany Solutions Chapter 12 Mineral Nutrition, Samacheer Kalvi 11th Bio Botany Solutions Chapter 10 Secondary Growth, Samacheer Kalvi 11th Bio Botany Solutions Chapter 7 Cell Cycle, Samacheer Kalvi 11th Bio Botany Solutions Chapter 8 Biomolecules, Samacheer Kalvi 11th Bio Botany Solutions Chapter 11 Transport in Plants, Samacheer Kalvi 11th Bio Botany Solutions Chapter 13 Photosynthesis, Samacheer Kalvi 11th Bio Botany Solutions Chapter 9 Tissue and Tissue System, Samacheer Kalvi 11th Bio Botany Solutions Chapter 4 Reproductive Morphology, Samacheer Kalvi 11th Bio Botany Solutions Chapter 14 Respiration, Samacheer Kalvi 11th Bio Botany Solutions Chapter 15 Plant Growth and Development, Samacheer Kalvi 12th Accountancy Solutions Chapter 6 Retirement and Death of a Partner, Involved in growth and occurs continuously throughout life, Involved in gamete formation only during the reproductively active age, The chromosome number in the daughter cell is similar to the parent cell (2n), The chromosome number in the daughter cell is just half (n) of the parent cell, Daughter cells are not similar to the parent cell and are randomly assorted, Cells are elongated and are unique long with tapering end walls, Cells consist of vertical cells placed one above the other forming long tubes connected at the walls by sieve pores, Sieve pores are larger and fewer in number, Sieve cells are found in pteridophytes and gymnosperms. 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