plants

plants - MERISTEMATIC TISSUE. Plant cell types rise by...

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MERISTEMATIC TISSUE. Plant cell types rise by mitosis from a meristem. A meristem may be defined as a region of localized mitosis . The pattern of plant growth depends upon the location of meristems. Meristems may be at the tip of the shoot or root (a type known as the apical meristem) or lateral, occurring in cylinders extending nearly the length of the plant. Apical meristems o located at the tips of roots and shoots o supply cells for the plant to increase in length (grow up for shoots and down for roots) o growth in this direction is known as primary growth o primary growth found in herbaceous and woody plants o primary growth found in monocots and dicots Lateral meristems o Located near the periphery of the plant, usually in a cylinder o supply cells for the plant to increase in girth o growth in this direction is known as secondary growth o found in all woody and some herbaceous plants o lateral meristems and secondary growth found only in dicots A cambium is a lateral meristem that produces (usually)
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This note was uploaded on 08/06/2011 for the course BIO 15 taught by Professor ?? during the Winter '09 term at UCLA.

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plants - MERISTEMATIC TISSUE. Plant cell types rise by...

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