Question

Short summary of chapter tissues class 9

Answer 1

Answer:

• A group of cells that are similar in structure and work together to perform a specific function is known as the tissue.
• Plant tissues can be categorised into two types meristematic and permanent.
• A group of young plant cells having the capacity to divide continuously is known as meristematic tissue.
• On the basis of the region where they are present in the plant body marriage terms are divided into apical meristem ,intercalary meristem and lateral meristem.
• the meristematic cells that lose the power of division and attain maturity form of permanent tissue.
• permanent tissue are of mainly to types simple permanent tissue and complex permanent tissue.
• the three main types of simple permanent tissues found in plants are parenchyma collenchyma and sclerenchyma.
• complex permanent tissue is composed of more than one type of cells that work together as a unit to perform a common function the complex tissues present in vascular plants are xylem and phloem.
• the four major types of animal tissue epithelial tissue muscular tissue connective tissue and nervous tissue
• the tissue in which epithelial cells are closely packed inform continuous sheet is called epithelial tissue that you can be grouped as squamous epithelial cuboidal epithelium and columnar epithelium ciliated epithelium and glandular epithelium.
• a tissue made up of long narrow elongated muscle cell is known as muscular tissue . muscles can be differentiated into three types on the basis of their location structure and function they are striated unstriated and cardiac muscle fibre.
• A connective tissue joins one tissue to another forms packaging material around various organs support framework of skeletal tissue conduct material from one part to another part of the body etc
• the connective tissue are mainly divided in 3 major group connective tissue proper skeletal or supportive tissue vascular a fluid tissue
• the connective tissue proper is group as areolar tissue adipose tissue tendons and ligaments
• the skeletal connective tissue is of two types cartilage and bones
• vascular tissue is of two main types blood and lymph
• A nervous tissue comprises nerve cell or neurones and conduct nerve impulses.

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