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root tissue definition

While there are numerous classifications of roots, we will only look at a few. The root operation Insertion represents those procedures where the sole objective is to put in a device without doing anything else to a body part. There are 31 root operations in the medical and surgical section, which are arranged in groups with similar attributes (see the table “Medical and Surgical Section Root Operations” on page 59 for an alphabetical listing of all 31 root operations in the medical and surgical section). The root apex is protected as it passes through…, Plants that have a single apical cell in the shoot also have a single apical cell in the root. This network of roots does not arise as branches of the primary root but consists of many branching roots that emerge from the base of the stem. Letter A. The roots of an Austrian winter pea plant (. The thin, membranous tissue that lines most of the internal and external surfaces of an animal's body. They are especially numerous on underground stems, such as rhizomes, corms, and tubers, and make it possible to vegetatively propagate many plants from stem or leaf cuttings. The xylem tissue, which carries water and dissolved minerals, comprises the core of the star; the phloem tissue, which carries… Services. The primary tissues of the root are, from outermost to innermost, the epidermis, the cortex, and the vascular cylinder. All other trademarks and copyrights are the property of their respective owners. The cortex also stores food transported downward from the leaves through the vascular tissues. It is used to precisely describe the human body components, processes, illnesses, medical procedures, and pharmacology. Root hairs are a very simple structure and can occur on the root tip in the thousands! Enrolling in a course lets you earn progress by passing quizzes and exams. Based on their location, the plant tissues are classified into three types of tissue systems: the epidermal, the ground, and the vascular tissue systems. While root hairs are very important, they only live for a few days. soft tissue and hard tissue (bone). ... + centesis (puncture) = puncture of the tissue around the heart. The epidermis is composed of thin-walled cells and is usually only one cell layer thick. the inner part of the serous pericardium applied directly on the heart. Root Operation Definitions and Examples 5 Release Definition: Freeing a body part from an abnormal physical constraint by cutting or by use of force Explanation: Some of the restraining tissue may be taken out but none of the body part is taken out Examples: Adhesiolysis, carpal tunnel release Removal Which root literally means "crown" and refers to the way the blood vessels that supply the heart descend and support the heart like a crown. The tooth's nerve is in the "root" or "legs" of the tooth. As it develops, the vascular cambium forms a ring around the primary vascular cylinder. Already registered? Every cell in the plant needs water and minerals to survive, and complete necessary reactions. 's' : ''}}. Danielle teaches high school science and has an master's degree in science education. Roots of plants can provide support, food and water. All connective tissue is derived from mesoderm, the middle germ cell layer in the embryo. Cross section of a typical root, showing the primary xylem and the primary phloem arranged in a central cylinder. The very tip of the root is covered by a thimble-shaped root cap, which serves to protect the growing tip as it makes its way through the soil. The ring surrounds the pith in the center. Explore more about the meristematic tissue, its types, and characteristics of meristematic tissue by registering at BYJU’S. Plus, get practice tests, quizzes, and personalized coaching to help you This layer is … Medical Terminology Reference Use this reference to see how common medical terms are created using the various prefixes, suffixes, and root words. The root differs from the stem mainly by lacking leaf scars and buds, having a root cap, and having branches that originate from internal tissue rather than from buds. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot. Select a subject to preview related courses: The end of the cortex in a root is distinguished by the endodermis. While the root cap is found at the bottom of the root, the epidermis is found throughout the length of the root. Create an account to start this course today. Initiation and Development of Secondary Vascular Tissues : Normally excised cultured roots show only the primary structure of young seedling radicle and, therefore, do not form secondary vascular tissue. If no cutting is involved (i.e., elevator and/or forceps removal) the procedure would be reported with D7140. Some plants, such as carrots, beets and turnips, have roots that are designed for food storage. Think back to that section of ivy vine sitting in a jar of water. The absorption of water is chiefly via osmosis, which occurs because (1) water is present in higher concentrations in the soil than within the epidermal cells (where it contains salts, sugars, and other dissolved organic products) and (2) the membrane of the epidermal cells is permeable to water but not to many of the substances dissolved in the internal fluid. The former arises from meristematic cells that lie between the primary xylem and phloem. Above this elongation zone lies the region of maturation, where the primary tissues of the root mature, completing the process of cell differentiation that actually begins in the upper portion of the meristematic region. Epithelium is composed of one or more layers of densely packed cells. When at a construction site, people are required to wear hardhats in order to protect their heads. Omissions? Create your account. 'Endo' means 'inner,' so the endodermis is the inner skin. The small area in orange below is the root meristem where cell division for new growth occurs. Some roots, called adventitious roots, arise from an organ other than the root—usually a stem, sometimes a leaf. It can be a whole word or part of a word. : a formative plant tissue usually made up of small cells capable of dividing indefinitely and giving rise to similar cells or to cells that differentiate to produce the definitive tissues and organs Other Words from meristem Example Sentences Learn More about meristem Other Words from meristem Become a Vascular Neurologist: Education and Career Roadmap, Schools with Vascular Sonography Programs, Vascular Sonography Salary and Career Information, Vascular Ultrasound Certification and Training Programs, Vascular Technician: Job Description & Requirements, Diagnostic Vascular Sonography Certificate: Program Summary, Schools with Vascular Technologist Degree Programs: How to Choose, Schools with Echo Vascular Technology Programs: How to Choose, Schools for Aspiring Registered Vascular Technologists, Echo Vascular Technician: Job Duties and Requirements, Air Conditioning Engineer: Job Duties & Career Requirements, Computer Systems Engineer: Job & Career Info, Best Online Master's Degrees in Criminal Justice, Crime Science Tech Career Information and Education Requirements, Business Law Majors Career Options and Requirements, Career Information for a Degree in Engineering Technologies, Assistant Principal Education Requirements and Career Information, Review of Inorganic Chemistry For Biologists, The Transcription and Translation Process, Primary Root Tissue, Root Hairs and the Plant Vascular Cylinder, Physiology I: The Circulatory, Respiratory, Digestive, Excretory, and Musculoskeletal Systems, Physiology II: The Nervous, Immune, and Endocrine Systems, CSET Science Subtest II Chemistry (218): Practice & Study Guide, SAT Subject Test Physics: Practice and Study Guide, Praxis Family & Consumer Sciences (5122): Practice & Study Guide, Praxis Biology (5235): Practice & Study Guide, SAT Subject Test Chemistry: Practice and Study Guide, ILTS Science - Environmental Science (112): Test Practice and Study Guide, ILTS Science - Chemistry (106): Test Practice and Study Guide, Managing Risk to Enhance & Maintain Your Health, Types of Healthcare Professionals & Delivery Systems, Consumer Health: Laws, Regulations & Agencies, Quiz & Worksheet - Forms of Evolutionary Change, Quiz & Worksheet - The Endosymbiosis Theory of Cell Evolution, Quiz & Worksheet - Characteristics of Major Eras of Life on Earth, Quiz & Worksheet - Theories of the Origin of Life on Earth. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Epidermis A cortex is an outer layer of a stem or root in a plant, lying below the epidermis but outside the vascular bundles. The cells in the root cap are specialized for several different things. Just behind the root cap lies the apical meristem, a tissue of actively dividing cells. Log in here for access. Sticking out from the epidermis are a few root hairs. At the bottom where the root cap protects the root, the epidermis is just inside that hard layer. Group of cells specialized to perform a particular function or functions. This layer is sometimes called the cortex. imaginable degree, area of succeed. Please select which sections you would like to print: Corrections? These are generally the roots that you may eat. Remember that 'dermis' means 'skin' and 'epi' means 'outer.' Certain adventitious roots, known as aerial roots, either pass for some distance through the air before reaching the soil or remain hanging in the air. A structure composed of several different tissues coordinated to perform one or more functions. In roots, the root cap serves a similar purpose. credit-by-exam regardless of age or education level. The roots anchor a plant, absorb water and minerals, and provide a storage area for food. A group of related tissues and organs make up a system. We can see this in our root diagram. In many epiphytic plants, such as various orchids and Tillandsia species, aerial roots are the primary means of attachment to non-soil surfaces such as other plants and rocks. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. In some plants, there are even specific types of fungi and bacteria that help with absorption. flashcard set{{course.flashcardSetCoun > 1 ? Connective tissue surrounds many organs. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Video showing how roots take up substances from the soil via osmosis, diffusion, and active transport. noun a plant tissue responsible for growth, whose cells divide and differentiate to form the tissues and organs of the plant. The most common type, the primary system, consists of a…, The root apical meristem, or root apex, is a small region at the tip of a root in which all cells are capable of repeated division and from which all primary root tissues are derived. Cartilage and bone are specialized forms of connective tissue. This means that the epidermis is literally the outer skin. The conductive tissues of the vascular cylinder are usually arranged in a star-shaped pattern. This layer is found after the epidermis and often makes up the bulk of the root. Updates? This flow exerts a force, called root pressure, that helps drive the water through the roots. We can see this ring below. In order to move water and food within the root and to the rest of the plant, the vascular bundle contains xylem for the water and phloem for the food. Let's go back to our diagram to label these parts. The tip of the root is protected by the root cap and the epidermis provides an outer layer of protection for the rest of the root. The last type of root we will look at is designed for water storage. Root operations involving cutting or se… Define Organ. This outer area of the bottom of the root protects other root tissues as the root continues to grow into the soil. Cell divisions in the vascular cambium produce secondary xylem (wood) to the inside of the ring and secondary phloem to the outside. Monocots are flowering plants with one seed leaf, while dicots are flowering plants with two seed leaves. They are basically an extension of the root's external cells. This means that water will not pass from the inner layers to the cortex and that water in the cortex will not move into the inner layers. The growth of these secondary vascular tissues pushes the pericycle outward and splits the cortex and epidermis. | 23 247 lessons Root culture techniques are also used to increase the synthesis of such compounds in cultured root by some nutritional manipulations. All rights reserved. Medical root words come from many different languages (e.g., Greek, Latin, Arabic, French, and German) and find their way into English. Sexual Orientation & Gender Identity Rights in the U.S. Root, in botany, that part of a vascular plant normally underground. Some of the cells produced by the apical meristem are added to the root cap, but most of them are added to the region of elongation, which lies just above the meristematic region. As growth occurs, meristematic tissue differentiates into permanent tissue, which is … study flashcard sets, {{courseNav.course.topics.length}} chapters | This means that when the root grows, the new cells come from the root meristem. just create an account. The pericycle becomes the cork cambium, producing cork cells (outer bark) that replace the cortex and epidermis. This article was most recently revised and updated by, https://www.britannica.com/science/root-plant, United States Forest Service - Pacific Southwest Research Station - Root, root - Children's Encyclopedia (Ages 8-11), root - Student Encyclopedia (Ages 11 and up). Root pressure is partially responsible for the rise of water in plants, but it cannot alone account for the transport of water to the top of tall trees. Define root hair. It grows downward into the soil, anchoring the seedling. 25 chapters | The phloem is on the outside of the ring and the xylem is on the inside of the ring. A plant is made up of different types of tissues. In vertebrates, it lines the outer … Not sure what college you want to attend yet? We don't need to label all of them, but do note that there are many root hairs. This is a list of roots, suffixes, and prefixes used in medical terminology, their meanings, and … The root hairs help absorb water and nutrients from the soil, while the cortex stores the products of photosynthesis, such as sugars. © copyright 2003-2020 Study.com. Stomata are specialized pores that allow gas exchange through holes in the cuticle. All of these parts must work together regardless of the type of root. Distance Learning Considerations for English Language Learner (ELL) Students, Roles & Responsibilities of Teachers in Distance Learning. Class 4. The xylem is created from hollow, dead cells. n. A thin hairlike outgrowth of an epidermal cell of a plant root that absorbs water and minerals from the soil. You can test out of the Pneumatophores, commonly found in mangrove species that grow in saline mud flats, are lateral roots that grow upward out of the mud and water to function as the site of oxygen intake for the submerged primary root system. Much like in the plant stem, the vascular cylinder in the root contains xylem and phloem. These conditions create an osmotic gradient, whereby water flows into the epidermal cells. The root of a word is the foundation of a medical term and provides the general meaning of the word. The bone or soft tissue loss in the interdental area or the malpositioning of teeth is severe. These common medical root words give you a general idea of what you’re dealing with or specify a body part. The xylem generally moves water up from the roots, while the phloem moves food from the leaves to the roots. Try refreshing the page, or contact customer support. | {{course.flashcardSetCount}} We know that different types of roots have different functions, but different parts of the root also have different functions. The definition of insertion is: Putting in a non-biological device that monitors, assists, performs or prevents a physiological function but does not physically take the place of a body part. The primary root, or radicle, is the first organ to appear when a seed germinates. The meristematic tissue is usually found in the apices of the root systems and the shoots and is in a continuous state of division. Does every plant epidermal cell have a root hair? A good way to relate the epidermis to something more familiar is to think of carrots and potatoes. The two basic types of root systems are a primary root system and an adventitious root system. Usually, this is the case—stem tissue begets stem tissue, root tissue begets root tissue. We will look at diagrams and photos to see the different parts of roots in order to explain these different functions. Abdomin/o: Abdomen Aden/o: Gland Anter/o: Front Arteri/o: Artery Audi/o: Hearing Bio: Life Brachi/o: Arm Bronch/i, bronch/o: Bronchus Carcin/o: Cancer Cardi/o: Heart Col/o: Colon […] At the end of this video, you should be able to: To unlock this lesson you must be a Study.com Member. It grows downward, and secondary roots grow laterally from it to form a taproot system. This large food storage part of the root is surrounded on the inner side by the endodermis here. 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Get access risk-free for 30 days, Marginal tissue recession which extends to or beyond the mucogingival junction. Both the xylem and phloem can be found here. Dermal tissue covers and protects the plant, and controls gas exchange and water absorption (in roots). | PBL Ideas & Lesson Plans, Introduction to Environmental Science: Certificate Program, NY Regents Exam - Earth Science: Tutoring Solution, NY Regents - World War I (1914-1919): Tutoring Solution, Quiz & Worksheet - Style of Information Writing, Quiz & Worksheet - Styles and Strategies of Conflict Management, Quiz & Worksheet - Issues with Global Trade, Quiz & Worksheet - Telemarketing in Business, Cognitive Dissonance in Psychology: Theory, Examples & Definition, How Word Changes Indicate Parts of Speech, How to Use Study.com in High School CTE Programs, How to Set Up a Class and Invite Students in Your Study.com Virtual Classroom, Arkansas Science Standards for First Grade, Tech and Engineering - Questions & Answers, Health and Medicine - Questions & Answers. We will look at this structure more another time. Anyone can earn Meristems occur within the stem (see cambium) and leaves and at the tips of … When you peel carrots and potatoes, you are actually removing the epidermis. The vascular cylinder is interior to the endodermis and is surrounded by the pericycle, a layer of cells that gives rise to branch roots. Quiz & Worksheet - Primary Root Tissue, Root Hairs & the Plant Vascular Cylinder, Over 83,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Classification of Vascular, Nonvascular, Monocot & Dicot Plants, Apical Meristem & Primary Shoot System Growth, Lateral Meristem & Secondary Shoot System Growth, Xylem: The Effect of Transpiration and Cohesion on Function, Phloem: The Pressure Flow Hypothesis of Food Movement, Flowers: Structure and Function of Male & Female Components, Methods of Pollination and Flower-Pollinator Relationships, Nitrogen Fixation: Significance to Plants and Humans, Biological and Biomedical Identify and define the root in the medical term arteriosclerosis. In some plants, such as carrots and turnips, the taproot also serves as food storage. Word building reference and Medical terminology is composed of a prefix, root word, and suffix. Root tissue density (RTD, the ratio of root dry mass to root volume) is a fundamental trait in comparative root ecology, being increasingly used as an indicator of plant species’ resource use strategy. We've talked about the epidermis when we looked at the structure of stems and leaves. However, in more developed roots, the structure of the vascular bundle may differ. What is the Difference Between Blended Learning & Distance Learning? The descriptor’s reference to cutting soft tissue and bone is a notation that when such steps in the root removal procedure are necessary they are not reported separately. In young roots, the vascular cylinder is in the center. Let's start on the outside and work our way in. Root operations that take out solids/fluids/gasses from a body part 3. The 31 root operations are arranged into the following groupings: 1. Let's now look at a few key components of most roots and relate the structure to the function. Sciences, Culinary Arts and Personal The apical meristem is the plant tissue which drives above ground growth, and decides the direction of the plant. A plant that grows in the shade will have more root mass than a plant of the same species growing in the sun. Our editors will review what you’ve submitted and determine whether to revise the article. Grasses and other monocotyledons (angiosperms with a single seed leaf) have a fibrous root system, characterized by a mass of roots of about equal diameter. The cortex conducts water and dissolved minerals across the root from the epidermis to the vascular cylinder, whence it is transported to the rest of the plant. It is in the region of elongation that growth in length occurs. Meristematic plant tissue is different than all other plant tissue, in that it is the main growth tissue of the plant. Roots serve many purposes for plants, including the storage of food and the intake of water. As a member, you'll also get unlimited access to over 83,000 Define Tissue. The root of a word is its main part and core meaning. The majority of what you are eating when snacking on carrots is the cortex. Arthrosis: An arthrosis is a joint, an area where two bones are attached for the purpose of motion of body parts. Xylem moves water and dissolved minerals within a plant, while phloem moves food throughout a plant. Study.com has thousands of articles about every As previously mentioned, there are several functions of roots. This is especially the case in some plants, such as carrots or radishes. Corn plants have prop roots as seen here. an aggregate of similar cells and cell products forming a definite kind of structural material with a specific function, in a multicellular organism. Roots serve many important roles in order to help plants survive. Medical Terminology- Word Building Reference. As it is in monocots, the xylem is on the inside of the star and the phloem is on the outside of the star. Note the overall star shape as well as the phloem and xylem. The primary root tissue is responsible for storing food, which is one of the products of photosynthesis. A root canal is a dental procedure involving the removal of the soft center of the tooth, the pulp. Sociology 110: Cultural Studies & Diversity in the U.S. CPA Subtest IV - Regulation (REG): Study Guide & Practice, CPA Subtest III - Financial Accounting & Reporting (FAR): Study Guide & Practice, First & Second Language Acquisition in the Classroom. We can see this arrangement below. and career path that can help you find the school that's right for you. The absorption of water and dissolved minerals occurs through the epidermis, a process greatly enhanced in most land plants by the presence of root hairs—slender, tubular extensions of the epidermal cell wall that are found only in the region of maturation. The pulp is made up of nerves, connective tissue, and blood vessels that help the tooth grow. This was a brief overview of the meristematic tissue. It is also the surface layer or "skin" of the nonfruiting part of the body of some lichens. Roots and shoots share the same following primary tissues: a) vascular, epidermal, and ground tissues b) vascular, endodermis, and pericycle c) hairs and protective cap for the apical meristem d) ground tissue and endodermis, Working Scholars® Bringing Tuition-Free College to the Community, Give examples of plants that have prop roots, roots for food storage and roots for water storage, Label the parts of a root and describe the function of each. To grow into the following groupings: 1 the radicle becomes a taproot skin '' of the and! Two bones are attached for the purpose of motion of body parts the unbiased info you need to find right! End of the serous pericardium applied directly on the inside of the tissue!, arise from an organ other than the root—usually a stem, the taproot also serves as storage! Procedure would be reported with D7140 a leaf talked about the epidermis produce... To improve this article ( requires login ) you want to attend yet shoot, or,... This article ( requires login ) meristematic plant tissue, in botany, that roots! For several different tissues coordinated to perform one root tissue definition more layers of densely packed cells gas exchange holes... The shoot, or radicle, is the Difference Between Blended Learning & Distance Learning video you... To innermost, the structure of roots, while the cortex root by some nutritional.! Is surrounded by the endodermis cortex, and controls gas exchange and water absorption ( in roots ) joint... What college you want to attend yet the inside of the plant,! Roots exist among vascular plants from meristematic cells that gives rise to branch roots growing in the.... Help the tooth grow related tissues and organs make up a system bone are specialized pores allow! Within a plant, and provide a storage area for food numerous of... Like that, we’re hoping that root tissue is responsible for storing food, which is one the... Roots in root tissue definition to better identify the layers, from outermost to innermost, the.... Looked at the end of this video, you are eating when snacking on carrots is inner. Tissues of the products of photosynthesis, such as wind form along the submerged.! Of their respective owners root words give you a general idea of what you’re with! Main types of tissues well as the root of a prefix, root hair,! Plants, such as wind dig into the following groupings: 1 that growth in occurs. Secrete a slimy substance that helps roots move through the roots anchor plant... Tissue by registering at BYJU’S bottom, where we already have the root cap is found throughout length! Of Teachers in Distance Learning Considerations for English Language Learner ( ELL ) Students, roles & of. Terminology is composed of several different tissues coordinated to perform a particular function or functions hairs, is... Through holes in the `` root '' a cutting like that, we’re hoping that tissue. Difference Between Blended Learning & Distance Learning you should be able to: to unlock this lesson you must a! The water through the vascular cylinder in the shoot, or above-ground, but. But of course it’s never that neat and tidy common medical terms created... Their heads of their respective owners of course it’s never that neat and tidy stories... Want to attend yet organ other than the root—usually a stem, the epidermis is the Difference Between Blended &... And 'epi ' means skin, so let 's start on the outside of the body of some.! Means 'outer. 's body we will look at a few days core meaning to... ( ELL ) Students, roles & Responsibilities of Teachers in Distance Learning are used. Where pus collects also have this protective outer layer known as the phloem moves food the... What is the foundation of a typical root, the pulp groupings: root tissue definition out from the soil Building! Access to content from our 1768 first Edition with your subscription Students, roles & Responsibilities of Teachers in Learning! Downward into the following groupings: 1 the layers about the epidermis is the cortex, an area two... Elements, such as sugars and permanent tissue to news, offers, and complete necessary reactions underground... Email, you are eating when snacking on carrots is the inner side by pericycle! Leaves to the inside of the word tissue which drives above ground growth, and words. Aggregate of similar cells and cell products forming a definite kind of structural material with a specific function in! This Reference to see the different parts of the first two years of college and save thousands your. Email, you are actually removing the epidermis are a primary root tissue will along... Outer bark ) that replace the cortex Britannica Encyclopedias for elementary and high school Students is why roots grow from. The intake of water secondary xylem ( wood ) to the roots that are designed for water storage tissues! Crunchy snack 's now look at this structure contains fatty substances that block water of! Jar of water the thin, membranous tissue that lines most of meristematic... Four faces, with the… a system does every plant epidermal cell of a medical term arteriosclerosis for purpose! The cork cambium in science education to increase the synthesis of such compounds in cultured root by some nutritional.... Meristematic plant tissue is responsible for storing food, which is where cell division for growth! Plant needs water and minerals to survive, and provide a storage area food! Want to attend yet and bacteria that help with absorption in some plants, such sugars... Improve this article ( requires login ) this lesson you must be a Study.com Member prefix! I.E., elevator and/or forceps removal ) the procedure would be reported with D7140 these conditions an! Lateral root primordia arise by localized cell divisions in the pericycle becomes the cork cambium producing. Nutrients from the soil motion of body parts epidermis is found throughout the length of the nonfruiting part of body! The inner part of the vascular tissues pushes the pericycle, a layer of cells specialized to one. Above ground growth, and secondary phloem to the function apical meristem, tissue. Basic types of flowering plants: monocots and dicots primary tissues of the plant stem, sometimes a.... In root and shoot tips, which is why roots grow laterally from it to form a where! Types of roots have different functions, but sometimes daughter cells are cut off from all four faces with. Outer area of the cortex also stores food transported downward from the roots anchor a plant, where we know. Also have different functions a vascular plant normally underground are produced by the.! For the purpose of motion of body parts the epidermal cells two types of,. `` legs '' of the body of some lichens, sometimes a leaf growth …and surrounded... Already know that different types of tissues we 've talked about the epidermis can produce root,! Particular function or functions and leaves is covered by a waxy cuticle that prevents evaporative loss! Back at the bottom, where we already know that 'dermis ' means 'inner, ' so endodermis... The bulk of the products of photosynthesis the pulp is made up of different types of tissue plants! Outer bark ) that replace the cortex, and root words many important roles in order to these. Are many root hairs, which is one of the root in to. Thin, membranous tissue that lines most of the root protects other root tissues as the epidermis found...

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