tissue
Tissue is a group of cells that share a common structure and perform a specific function. In multicellular organisms, tissues organize into organs and organ systems, enabling complex processes such as digestion, movement, and support. In plants, tissues form the basic structural and functional units of organs like leaves, stems, and roots.
Animal tissues are typically categorized into four main classes: epithelial tissue lines body surfaces and forms
Plants also possess organized tissues, grouped into three primary systems: dermal tissue for protection and gas
In tissues, cells reside within an extracellular matrix that provides structural support and biochemical communication. The
Development and maintenance: Tissues arise from the three germ layers in animals and from meristematic activity