BIO121 Lab 6
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Created by:
vanoevsa on February 16, 2011
Subjects:
flowering plant structure and function (1)
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26 terms
Terms | Definitions |
|---|---|
 cell division | mitosis; cell reproduction |
| cell elongation | cell growth in plants |
| cell differentiation | (maturation) processes by which unspecialized cells develop into their mature form and function. |
| meristems | region of rapidly dividing cells in plants;specialized tissues that divide embryonic cells that enable plants to grow their entire lives |
| root cap | a cone of cells at the tip of a plant root that protects the apical meristem |
| apical meristem | embryonic plant tissue in the tips of roots and in the buds of shoots that supplies cells for the plant to grow in length |
| zone of elongation | region of the root tip adjacent to the zone of cell division; cells sometimes elongate to more than ten times their original length |
| root hairs | tiny hair-like extensions that increase the surface area of the root allowing it to absorbs more water and nutrients |
| branch root | a root that arises as a branch of a preexisting root, through divisions of pericycle cells and subsequent differentiation of the daughter cells |
| pericycle | in plants, the layer of cells just within the endodermis that gives rise to lateral roots |
| zone of differentiation | region of a root tip where cells undergo specialization |
| lateral bud | meristematic area on the side of a stem that gives rise to side branches |
| terminal bud | embryonic tissue at the tip of a shoot, made up of developing leaves and a compact series of nodes and internodes |
| leaf primordia | finger-like projections along the flanks of the apical meristem, from which leaves arise |
| branch | a division of a stem, or secondary stem arising from the main stem of a plant |
| stem | a slender or elongated structure that supports a plant or fungus or a plant part or plant organ |
| potato "eyes" | clusters of axillary buds on tubers that mark nodes |
| apical dominance | concentration of growth at the tip of a plant shoot, where a terminal bud partially inhibits axillary bud growth |
| cambium meristem | thin layer of cells between the xylem and the phloem; cells in the cambium can divide to produce the phloem and xylem cells as the plant develops |
| dermal tissue | (protoderm) becomes epidermis; protective covering of plants; generally a single layer of tightly packed epidermal cells covering young plant organs formed by primary growth |
| ground tissue | tissue between the dermal tissue and vascular tissue of a non-woody plant that functions in photosynthesis, storage, and support; produces endodermis and cortex |
| vascular tissue | (procambium) tissue that conducts water and nutrients through the plant body in higher plants; produces stele, pericycle, pith, xylem, and phloem |
| protoderm | outermost primary meristem, which gives rise to the epidermis of roots and shoots |
| procambium | primary meristem of roots and shoots that forms the vascular tissue |
| lateral root | root that arises from the outermost layer of the pericycle of an established root |
| nitrogen | the most common gas in the atmosphere |
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