how are plant tissue classified according to their function?

Plant tissues are divided into growth (embryonic) tissues, supporting, filling and photosynthetic tissues (ground tissues), conducting (vascular) tissues and covering (dermal) tissues.

Embryonic tissues: primary meristems; secondary meristems. Supporting tissues: collenchyma; sclerenchyma. Filling and photosynthetic tissues: photosynthetic parenchyma; storage parenchyma. Conducting tissues: xylem; phloem. Covering tissues: epidermis; periderm