1. (b) Collenchyma Their nuclei are located at the base. Fibres are elongated sclerenchymatous cells, usually with pointed ends. Class 9 Science Chapter 6 Extra Questions and Answers Tissues. You can DownloadÂ Samacheer Kalvi 9th Science Book SolutionsÂ Guide Pdf, Tamilnadu State Board help you to revise the complete Syllabus and score more marks in your examinations. The other simple permanent tissues are: Each neuron consists of a cell body or cyton with nucleus and cytoplasm. During amitosis, nucleus elongates first, and a constriction appears in it which deepens and divides the nucleus into two, followed by this cytoplasm divides resulting in the formation of two daughter cells. Prabhakaran Nair, in The Agronomy and Economy of Turmeric and Ginger, 2013. Simple tissue are homogeneous-composed of structurally and functionally similar cells eg., Parenchyma, Collenchyma, and Sclerenchyma. (c) Collenchyma Nerve supply from both autonomous and central nervous system. (d) All of the above (b) nerve endings Simple permanent tissue and complex permanent tissue are formed when meristematic tissue lose their ability to divide after an extent. Nervous tissue comprises of the nerve cells or neurons. 20 minutes ago by. Cells are elongated with unevenly thickened non-lignified walls. Xylem 13. tracheids, vessels, xylem parenchyma and xylem fibres. Answer: 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. Red blood corpuscles (Erythrocytes): The red blood corpuscles are oval-shaped, circular, biconcave disc-like and lack nucleus when mature (mammalian RBC). Save my name, email, and website in this browser for the next time I comment. What is histology? How?+ Name the elements present in phloem. Which is not a function of complex tissue 0 likes. It consists of plasma and white blood cells. (b) Lymph: Lymph is a colorless fluid filtered out of the blood capillaries. Parenchyma is a type of simple permanent tissue that makes a major part of ground tissues in plants, where other tissues like vascular tissues are embedded. Aerenchyma is the tissues having large air cavities which provides buoyancy to the plants and help them to float. They contain a respiratory pigment called hemoglobin which is involved in the transport of oxygen to tissues. It also serves the functions of storage of food reserves, absorption, buoyancy, secretion etc. Biology. The tissue is present in the stem around vascular bundles in the veins of leaves and the hard covering of seeds and nuts. WBCâs are of two types. Their function is conduction of water and providing mechanical support to the plant. (a) sieve elements, Question 4. Ans: A group of cells that are similar in structure and functions grouped together to form a tissue. (c) trichomes Chapter-6. Page No. Question 3. (i) Xylem tracheids: They are elongated or tube-like dead cells with hard, thick and lignified walls. Functions: Parenchyma may store water in many succulent and xerophytic plants. (c) Chlorenchyma (d) None of these. But since these cells do not store food or waste material, they lack vacuole. (a) axon Squamous Epithelium is made up of thin, flat cells with prominent nuclei. Your email address will not be published. 0. Some cells contain chlorophyll called chlorechyma and perform photosynthesis. Answer: To avoid this verification in future, please, Structural Organisation in Animals and Plants. Each chromosome gets attached to a spindle fibre by its centromere which is known as the chromosomal fibre. (c) Sclerenchyma It is also found in the intestine and tubular part of the nephron (kidney tubules) as microvilli that increase the absorptive surface area. The cells are long and narrow, making the plant hard and stiff. Answer: It forms delicate lining of the buccal cavity, alveoli of lungs, proximal tubule of kidneys, blood vessels and covering of the skin and tongue. Give reasons why the meristematic cells have a large nucleus and dense cytoplasm. NCERT Solutions Class 9 Science Tissues. (c) xylem, Question 5. Define tissue. What is complex tissue? The tissue is defined as a group of cells which are similar in structure and work together to perform a particular function is known as tissue. They support the body, protect various organs and help in locomotion. What are the permanent tissues? The fibers consists of …………………… Samacheer Kalvi 10th Model Question Papers. CBSE Class 9 Science Chapter 5 Tissues Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. The plasma contains inorganic salts and organic substances. 9th grade . to stick to breaks in the blood vessel wall and also to stick to each other. Name the various kinds of complex tissues. What are intercalary meristems? Sometimes, these tissues also contain chlorophyll and perform photosynthesis, and known as chlorenchyma. Question 4. 20 minutes ago by. ... Plant Tissues â Structure and Function, Class 9 Science. It protects the body from mechanical injury, drying and invasion of germs. These notes are prepared in simple and easy language. Xylem is a conducting tissue which conducts water, mineral nutrients upward from root to leaves. Mention the most abundant muscular tissue found in our body. Granulocytes (with granules in the cytoplasm): have irregular shaped nuclei and cytoplasmic granules. Question 2. Therefore only if gametes are produced, fertilization can take place. 6. Write about the elements of Xylem. They include neutrophils, basophils, and eosinophils. Answer: Get chapter notes for CBSE Class 9 Science, chapter 6: Tissues (Part-I). Vascular Bundles. Xylem fibres help in conduction of water and nutrients from root to the leaf and also provide mechanical support to the plant. It is a main circulating fluid that helps in the transport of substances. They are the longest cells of the body. 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. (iii) Sclerenchyma Two types; Chlorenchyma and Arenchyma. (a) uterus Answer: ... 9. Played 0 times. These cells are devoid of protoplast. In aquatic plants. Glandular Epithelium Epithelial cells are often modified to form specialized gland cells that secrete chemical substances at the epithelial surface. No intercellular spaces between the cells are found. They contain proteins on their surface that allow then! (d) None of the above Privacy: Your email address will only be used for sending these notifications. We have already studied in the fundamental unit of life class 9 notes that the tissues are composed of cells. Complex tissues consist of parenchyma and sclerenchyma cells. Why? Xylem is composed of different kinds of elements. If false, write the correct statement. The cells are compactly arranged with little intercellular spaces. The cell is the structural and functional unit of life. (c) Tendons, IV. Tissues Class 9 Important Questions and Answers Science Chapter 6. Muscles, organs and blood are all tissues formed by the grouping of cells. The ground tissue of plants includes all tissues that are neither dermal nor vascular.It can be divided into three types based on the nature of the cell walls. (iii) Xylem vessels: They are long cylindrical, tube like structures with lignified walls and wide central lumen. Name any two types of simple permanent plant tissues. Chlorenchyma: Parenchyma with chlorophyll which performs photosynthesis is called as chlorenchyma. Lining of small intestine is made up of ………………, Epithelial tissue is protective tissue in animal body – True, Bone and cartilage are two types of areolar connective tissue – False. It is found either at the base of leaf e.g. Question 1. Aerenchyma: A spongy or soft plant tissue with large air spaces found between the cells of the stems and leaves of many aquatic plants, which allows exchange of gases between the shoot and the root Chlorenchyma: In some cases the parenchyma cells contain chloroplasts and are called as chlorenchyma.These cells are meant for photosynthesis. (b) hydrophytes, Question 6. It also serves the functions of storage of food reserves, absorption, buoyancy, secretion etc. Parenchyma is a type of (a) Complex tissue (b) Simple tissue (c) Xylem (d) Phloem. Played 0 times. _____ is the process by which unspecialised structures become modified and specialised for performing specific functions. Main Menu. Platelets are actually not true cells but merely circulating fragments of cells. (b) artery 0% average accuracy. Sclereids are isodiametric, with liginified walls. cactus) is the main function. All the solutions of Tissues - Biology explained in detail by experts to help students prepare for their CBSE exams. It is seen in the trachea of wind-pipe, bronchioles of the respiratory tract, kidney tubules and fallopian tubes of oviducts. (a) Parenchyma Smooth muscles occur in …………………….. Complex tissues are made of more than one type of cells that work together as a unit. It provides protection, support, conduction,photosynthesis, storage, etc. Why should gametes be produced by meiosis during sexual reproduction? 69. Question 3. In text questions of page no 69 . Tissues Class 9 Extra Questions Very Short Answer Type. 7. (a) Parenchyma, Question 2. Parenchyma cells are thin-walled, oval, rounded or polygonal in shape with well-developed spaces among them. It fills the spaces between different tissues forming organs tissues including bone,,. 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