Botany Chapter 4

Botany Chapter 4 - Chapter 4: Tissues Meristematic Tissues...

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1 Chapter 4: Tissues Meristematic Tissues ± ± Permanent regions of active cell division ± ± Tissues that undergo mitosis & produce new primary tissues ± Found at the tips of roots and shoots. ± Increase in length as the apical meristems produce new cells (primary growth) Primary meristems ± New stems and leaf tissues ± Axillary buds ± Increase in node # or internode length ± 3 types: ± ± ± ± Each type generates a primary tissue (differentiates)
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2 Primary tissues ± ± Epidermis ± From protoderm ± ± Conducting ± From procambium ± ± In between the other 2 ± Pith ± From ground meristem Shoot apical meristem Lateral Meristems (Secondary meristems) ± Produce tissues that increase the girth of roots and stems ± Can produce xylem and phloem. ± Secondary Growth ± ± Produces secondary tissues that function primarily in support and conduction ± Wood ± Thin cylindrical cells. ± ± Lies outside vascular cambium just inside the outer bark.
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Botany Chapter 4 - Chapter 4: Tissues Meristematic Tissues...

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