a) i. Phloem Diagram Difference Between Xylem and Phloem . Ø The other type of plastids accumulates plenty of proteins. Ø Nucleus is absent in the sieve elements. Also, see Tissues Class 9 Notes, Video Explanation and Question Answers. Become our. Answer: 1. Class 9 Science NCERT Textbook – Page 77. Tissues Class 9 Extra Questions HOTS. (ii) Draw a neat diagram of xylem vessel and a tracheid. The phloem constitutes of the following four elements, they are: Sieve tube Companion cells Phloem parenchyma Phloem fibres. Download free CBSE Sample paper for Class 9, Biology. Ø Nacreous wall consists of cellulose and pectic substances as lamellate structures. Ø The cell wall areas between pore are called ‘bars’. Answer. Differentiate between A and B iii. Vascular Bundles: Structure and Classification, Your email address will not be published. Write the difference between a bone and cartilage. Nervous tissue, combination of both the tissues … Mention one function of each A and B . ii. Ø They are arranged parallel to the long axis of the organ in which they occur. ... 9. Explore the major difference between the two. These notes are prepared in simple and easy language. 13. Give reasons for (a) Meristematic … Asked by Virender | 29th Jun, 2018, 10:08: PM. Phloem transports food in the plant body. These are the tubular cells having perforated walls (small pores in the wall). Comments . Ø When the phloem is seen as included inside the secondary xylem, as occurs in some climbers, it is called as Inter-xylary phloem or included phloem. Ø Dictyosomes and ribosomes in the cells disappear. 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Procumbent ray cells: long axis of the cell are radially elongated, B. Upright ray cells: long axis of the cell vertically elongated. Q. CBSE Class IX Science SA 2 (3 Marks) Ø Two types of parenchyma occurs in secondary phloem: Ø Axial parenchyma is originated from the elongated fusiform initials of the cambial cells. Maths. So, … Primary phloem originates from procambium and secondary phloem originates from vascular cambiilrn. Your No1 source for Latest Entrance Exams, Admission info . Ø Companion cells are narrower than sieve tube elements. Ø In some plants, phloem fibres are very long. Location in the Vascular Bundle. Solution: NCERT Solutions for Class 7 Science. Ø Sieve elements are the fundamental cell type in the phloem. Solution: Blood carries digested food and oxygen to all parts of body. ... Vascular bundle c. Xylem d. Phloem. Thanks for the wonderful guide. Write two differences between striated and smooth muscles. Together with xylem, they form the vascular tissue system. All questions and answers from the P S Verma V K Aggarwal (biology) Book of Class 9 Science Chapter 3 are provided here for you for free. Find an answer to your question labelled diagram of xylem and phloem showing its components.The main parts you will hear a lot about are called xylem and phloem. Ø They are thin walled cells with protoplasm and nucleus. Name the following. Answered; Draw a labelled diagram of xylem tissues. Ø They occur in the phloem of Angiosperms. Ø An uninterrupted continuity of protoplasts occurs between cells. Thanks see you on the video. Ø The included phloem may be or two types. The ‘bark’ is a non-technical term describing all tissue outside the secondary xylem of the plant. The material (food) can move in both the directions (i.e. Tissue. Answer: The various components are phloem fibres, phloem parenchyma, sieve tubes and companion cells. Write the difference between xylem and phloem. Difference between Protophloem and Metaphloem, Complex Tissue System in Plants: Part – 1: Xylem – Structure and Components, Difference between Protoxylem and Metaxylem, Difference between Dicot Stem and Monocot Stem, Vascular Bundles: Structure and Classification, Complex Tissue Systems in Plants: Part-1 Xylem – Structure, Components and Classification (with PPT), Tyloses: Definition, Structure and Functions, Anatomy of Monocot Stem: Key Points with PPT, Meristematic Tissue: Structure and Classification (Key Points), Anatomy of Dicot Stem: The Primary Structure – Key Points with PPT, Difference between Parenchyma and Collenchyma: A Comparison Table. Ø The dots are protoplasmic materials which pass through pores called pore contents. Ø By the end of the maturation, ER completely disorganizes. It is the food conducting tissue of vascular plants. Ø In some plants, in addition to the above mentioned cell types, the phloem also have internal secretary tissues such as Laticifers (Hevea) and resin canals. Xylem and phloem are the two types of vascular tissues, present in plants and together constitute vascular … Learn more: What are P-proteins and what are its functions in the phloem? Answer : 10. BNAT; Classes. Ø Due to the shining appearance of the cell wall, they are called as necreous layer. Ø Formed from vascular cambium during the secondary growth of the plant. ... Class 9 Science NCERT Textbook – Page 73. The dead element present in the phloem is (a) companion cells (b) phloem fibres (c) phloem parenchyma (d) sieve tubes. In between the xylem and the phloem vessels there is a layer of cambium. Draw well labelled diagrams of various types of muscles found in human body. Ø Phloem located external to the xylem is called ‘external phloem’. Phloem Diagram BBC GCSE Bitesize Xylem and phloem . 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