The document discusses different types of permanent plant tissues. There are three main types of permanent tissues: simple tissues, complex tissues, and secretory tissues. Simple tissues are homogeneous and composed of similar structural and functional cells. The three main types of simple tissues are parenchyma, collenchyma, and sclerenchyma. Parenchyma cells store food and aid regeneration. Collenchyma provides support and carries out photosynthesis. Sclerenchyma provides mechanical support and protection. Complex tissues include phloem and xylem. Phloem transports food materials while xylem transports water and minerals. Secretory tissues secrete substances like oils, resins, or latex.