In Class 9, tissues are defined as a group of cells that have a similar structure and work together to perform a specific function. Tissues are the building blocks of living organisms and are responsible for various functions in the body. There are two main types of tissues:
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Plant Tissues: These are made up of similar types of cells and are different from animal tissues. Plant tissues can be further classified into meristematic tissues and permanent tissues.
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Animal Tissues: Animal tissues are grouped into four types: connective tissue, muscle tissue, nervous tissue, and epithelial tissue. These tissues are responsible for providing shape to different organs and maintaining their positions. Examples of animal tissues include blood, bone, tendon, adipose, ligament, and areolar tissues.
