kerato- or kerat- also cerato- or cerat- pref. 1. Horn; horny: keratosis. 2. Cornea: keratectomy. [Greek kerÄto-, horn, from keras, kerÄt-; see ker- in Indo-European roots.] kerato- or before a vowel kerat- combining form 1. indicating horn or a horny substance: keratin; keratogenous. 2. (Medicine) indicating the cornea: keratoplasty. [from Greek kerat-, keras horn] kerato- a combining form meaning âcorneaâ: keratoplasty.
Early root growth is one of the functions of the apical meristem located near the tip of the root. The meristem cells more or less continuously divide, producing more meristem, root cap cells (these are sacrificed to protect the meristem), and undifferentiated root cells.
The meristem also forms a protective root cap. The cells to the upper left of this image are embryonic protoderm, ground meristem, and procambium. Apical meristems are sites of intense mitotic cell divisions. The new cells produced fuel the growth and development of new tissues. second ring of meristematic tissue forms just below the epidermis in woody plants to produce bark. This is the cork cambium. The cork cambium and vascular cambium contribute to subsequent or secondary growth typically found only in woody plants. Now, roll over the apical meristem on the diagram..