Talk:Botany/Plant tissues

This section is very lacking, considering the abundance of information on wikipedia, and across the web on this topic, here are some notes I took, however I do not feel very confident nor competent to enter them into this text. Notes on Cell types: Parenchyma cells are generalized plant cells that are essentially the most basic plant cells containing all necessary structures, a parenchyma with chloroplasts (thus one that conducts photosynthisis) are called chlorencyma. Collenchyma a parenchyma that has thickened walls that allow for the support and stucture of the plant. Sclerenchyma lignified dead parenchyma which form large fibers which allow for increased support for the stucture of the system. Epidermal tissues are simply the skin of the plant, they cover and protect it. Cork an amalgamation of tightly packed dead parenchyma and epidermal cells found in the inner bark which allows for improved insulation and helps to prevent the loss of water and other nutrients in larger wooded plants. Xylem is a tissue responsible for the transport of water (and other nutrients) across the plant system, it is primarily composed of tracheary cells, Xylem Tracheid and Xylem Vessels. All tracheary cells have lignified cell walls and the absence of a protoplast. Due to the lignified cells walls the xylem tissue aids in supporting the plant system. Xylem trachied are long, 1mm in length, cells which allow for the transport of nutrients throughout the plant, and hold water against gravity by means of adhesion.

References for plant tissues on wikipedia... See http://en.wikipedia.org/wiki/Xylem See http://en.wikipedia.org/wiki/Phloem