What is a tissue _____ What are some identifying features of merist.pdf

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What is a tissue? _____ What are some identifying features of meristematic tissue? Relative size of the cells: _____ Relative size of the nucleus: _____ Size of the vacuoles: Solution 4) when cells of similar type and same origin combine to perform a specific function it is known as tissue.it is a intermediate level between cells and organ.example: xylem and phloem.Xylem helps in the transportation of water throughout the plant and phloem helps in transportation of food to various parts of plants 5 ) (a)They are small in size.These cells are incompletely or not differentiated.They divide continuously.They are filled with protoplasm. (b) The relative size of nucleus is large.the cells forever remain young and throughout the life of plant.The main function is to perfrom mitosis. (c) vacoules are used to store waste material, excess salts etc.They are big and more in number in mature cells but meristemetic cells are mainly concern with growth hence they don\'t contain waste material so the size of their vacoule is small or they are absent in meristematic cells..

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In Class 9 Biology, tissues are an essential topic. Let's go through some key points about tissues: Definition: A tissue is a group of cells that have a similar structure and work together to perform a specific function. Types of Tissues: 1. Epithelial Tissue: Location: Covers body surfaces, lines cavities and organs. Functions: Protection, secretion, absorption, and sensation. Types: Simple epithelium (single layer), stratified epithelium (multiple layers), and pseudostratified epithelium. 2. Connective Tissue: Location: Found throughout the body. Functions: Support, bind together, and protect tissues and organs. Types: Loose connective tissue, dense connective tissue, cartilage, bone, blood, and adipose tissue. 3. Muscular Tissue: Location: Attached to bones (skeletal), walls of internal organs (smooth), and heart (cardiac). Functions: Movement and locomotion (skeletal), involuntary movements of organs (smooth), and pumping of blood (cardiac). 4. Nervous Tissue: Location: Brain, spinal cord, and nerves. Functions: Transmit and receive impulses, coordinate and regulate body activities. Composed of neurons and neuroglial cells. Plant Tissues: 1. Meristematic Tissue: Location: Found at the growing tips of roots and stems. Functions: Responsible for plant growth and development. 2. Permanent Tissue: Simple Permanent Tissue: Parenchyma (storage), Collenchyma (support), and Sclerenchyma (mechanical support). Complex Permanent Tissue: Xylem (water transport) and Phloem (food transport). Differences Between Plant and Animal Tissues: Plant tissues have cell walls, while animal tissues do not. Plant tissues have chloroplasts for photosynthesis, which animal tissues lack. Plant tissues often have intercellular spaces, allowing gas exchange, while animal tissues generally do not. Cell Organelles in Tissues: Cells in tissues contain various organelles, such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus, each contributing to specific cellular functions. For more detail, visit. www.vavaclasses.com

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In biology, tissue is a cellular organizational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Broadly tissues can be classified into two major groups : Plant tissue and Animal tissue. A plant tissue can be defined as a cell or a group of cells dividing, to give rise to large number of cell, which is collectively referred as tissues. They are structurally and functionally similar to these cells. Plants do have a higher level of structure called plant tissue systems. A plant tissue system can be defined as a functional unit, which connects all organs of a plant. Like animal tissue system, plant tissue system is also grouped into various tissues based on their functions. In this lesson you will learn about : 1) Tissues - "The Teams of Workers" 2) Types of Plant Tissues 3) Plant Tissue Systems I hope this document is helpful to you. Please share the document with your friends if you think this will benefit them. Get ready for the next lesson. Thanks.

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