Phloem fibres are usually larger called bast fibres. Answer 50. The function of xylem is to conduct water & minerals salts upwards from the roots to stem & leaves and to give mechanical strength to the plan: body. Xylem sclerenchyma (or fibers). (a) State one point of difference between xylem and phloem. Phloem and xylem are complex tissues that perform transportation of food and water in a plant. STUDY. FREE (15) AlexM2002 Synoptic Essay AQA Biology A Level. Enter your e-mail address. Ø  Both contain parenchymatous cells. The vascular bundles found in the primary structures of plants are formed by the association of xylem and phloem. Both xylem and phloem consist of more than one type of cells, which coordinate to perform a common function. Phloem, like xylem, is comprised of several specialized cells like sieve tubes, companion cells, phloem fibers, and phloem parenchyma. Phloem and xylem are closely associated and are usually found right next to one another. Xylem parenchyma 4. Except xylem parenchyma, all other elements are dead and bounded by thick … A diagram showing the setup of a pressure bomb. CBSE Class IX Science SA 2 (3 Marks) Xylem and phloem grow around the inner layer of pith with phloem cells on the outside of the xylem. Vascular Bundles: Structure and Classification, @. NCERT Exemplar Class 9 Science is very important resource for students preparing for IX Board Examination. Differentiate between (i) Xylem and phloem (ii) Vessel and sieve tube (iii) Tracheid and vessel Answer: (i) Xylem and phloem – Xylem: Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. Tyloses formation do not occur in the phloem. Consists mainly of living cells (only fibres are the dead cells in the phloem). 1. Question from very important topics are covered by NCERT Exemplar Class 9.You also get idea about the type of questions and method to answer in your Class 9th examination. Dec 10, 2020 - Complex Permanent Tissues -Xylem and Phloem - Tissues - Class 9 - Science Class 9 Video | EduRev is made by best teachers of Class 9. Ø In leaves, the phloem is located on the abaxial side (lower side). Xylem is ne of the two vascular tissues (the other being xylem), but this. In xylem vessels water travels by bulk flow rather than cell diffusion.In phloem, concentration of organic substance inside a phloem cell (e.g., leaf) creates a diffusion gradient by which water flows into cells and phloem sap moves from source of organic substance to sugar sinks by turgor pressure. FREE (15) AlexM2002 Synoptic Essay AQA Biology A Level. This video is highly rated by Class 9 students and has been viewed 608 times. For conduction of water death of protoplasm if must. Creative Commons "Sharealike" Other resources by this author. Parenchyma, collenchyma and sclerenchyma are the examples of simple plant tissue whereas xylem and phloem are complex tissue. Ø  Both xylem and phloem are complex tissue composed of more than one type of cells. On the basis of origin, xylem is divided into primary xylem and secondary xylem: NCERT Exemplar Class 9 Science Solutions Class 9 Science Chapter 6 Tissues. The term phloem is derived from the Greek word – φλοιός (phloios), meaning bark. Both contain vascular tissue, which helps in transportation of material throughout the plant. Xylem and phloem together make the vascular bundle in plants. Therefore, when the phloem is internal to the xylem, then it will refer as “Internal Phloem” and when present external to the xylem then it will refer as “External phloem”. Mainly contains living cells (fibers are the only dead cells in the phloem). Solution: “A group of cells that are similar in structure and/or work together to achieve a particular function is called a tissue.” Blood, phloem, and muscle are all examples of tissues. Xylem transports only minerals and waters from the roots. Given below are the important points which distinguish xylem with that of phloem: Xylem is the complex tissue of plants, responsible for transporting water and other soluble nutrients to the plants and the flow is unidirectional which is from root to the upper part of the plant, while on the other hand phloem is the another kind of the vascular, living tissue which is responsible for transporting food and … For conduction of water death of protoplasm if must. Ø In some plants (members of Cucurbitaceae and Convolvulaceae), the phloem is present on both external and internal to xylem. ... xylem parenchyma and xylem fibres. Tissues Class 9 Extra Questions Long Answer Type. Phloem fibers, sieve tubes, sieve cells, phloem parenchyma and companion cells. Amount of xylem is more than that of phloem. The center of the stele in monocots is made up of pith. In mature plants, the xylem forms the major bulk of the plant body. Xylem: Xylem is a vascular and mechanical tissue. Both primary and secondary growth periods are found in xylem and phloem. The conductive tissue in the xylem is dead (Tracheids and Vessels). These cells are also living cells and are not lignified. Xylem: The cells have thick cell wall and many of them are dead. (ii) Phloem. But, the phloem can be present either internal or external to the xylem. Xylem occupies inner to the vascular cambium. Your email address will not be published. Biology; Biology / Organ systems; Biology / Plants; 14-16; View more. Xylem. class-9 Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Contain two types of conductive cells (Tracheids and Vessels). It is a complex tissue composed of many types of cells. Choose the correct option : (a) In plants, water is transported through. Majority of the cells in the phloem are thin walled cells. Contain only one type of conductive cells (Sieve elements). No such differentiation of phloem occurs. Question 1. Differentiate between (i) Xylem and phloem (ii) Vessel and sieve tube (iii) Tracheid and vessel Answer: (i) Xylem and phloem – Xylem: Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. In mature plants, the wood (xylem) is differentiated into heart wood and sap wood. The different components of the xylem include tracheids, vessels, xylem parenchyma and xylem fibres. Ø  Both contain living and dead cells. This tissue helps in the transport of water and dissolved substances throughout the plant. Phloem cells are divided into sieve elements (conducting cells) and cells that support the sieve elements. 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