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Chapter 22Vocab
| Question | Answer |
|---|---|
| spherical, thin-walled cell found throughout most plants that can function in photosynthesis, gas exchange, protection, storage, and tissue repair and replacement. | parenchyma cell |
| often elongated plant cell that provides flexibility for the plant, support for surrounding tissues, and functions in tissue repair and replacement. | collenchyma cell |
| plant cell that lacks cytoplasm and other living components when mature, leaving thick, rigid cell walls that provide support and function in transport of materials. | sclenechyma cell |
| region of rapid cell division in plants; produces cells that can develop into many different types of plant cells. | meristem |
| thin cylinder of meristematic tissue that produces new transport cells | vascular cambium |
| meristematic tissue that produces cells with tough cell walls that form the protective outside layer on stem and roots. | cork cambium |
| dermal tissue that makes up a plant's outer covering in humans and some other animals, the outer superficial layer of skin made up of epithelial cells | epidermis |
| one of a pair of cells that function in the opening and closing of a plant's stomata by changes in their shape. | guard cell |
| vascular plant tissue that transports water and dissolved minerals away from the roots throughout the plant and is composed of vessel elements and tracheids. | xylem |
| long, cylindrical plant cell in which water passes from cell to cell through pitted ends. | tracheid |
| vascular plant tissue composed of sieve tube members and companion cells that conducts dissolved sugars and other organic compounds from the leaves and stems to the roots and form the roots to the leaves and stems. | phloem |
| nonnucleated, cytoplasmic cell of the phloem | sieve tube memeber |
| nucleated cell that helps the mature sieve tube member function in transporting dissolved substances in the phloem of vascular plants. | companion cell |
| plant tissue consisting of parenchyms, collenchyma, and sclerenchyma. | ground tissue |
| layer of parenchyma cells that cover the root tip and helps protect root tissues during growth | root cap |
| layer composed of ground tissues between the epidermis and vascular tissue of a root. | cortex |
| cell layer at the inner boundary of the cortex; regulates the materials that enters the plant's vascular tissues. | endodermis |
| plant tissue that produces lateral roots | pericycle |
| stalk that connects a plant's blade to the stem | petiole |
| leaf-tissue layer that contains many chloroplasts and is the site where most photosynthesis takes place. | palisade mesophyll |
| loosely packed, irregularly shaped cells with spaces around them located below the palisade mesophyll. | spongy mesophyll |
| process in which water evaporates from the inside of leaves to the outside through stomata | transpiration |
| plant hormone that moves in only one direction away form the site where it was produced and can stimulate the elongation of cells | auxin |
| group of plant hormones that are transported in vascular tissue and that can affect seed growth, stimulate cell division, and cause cell elongation | gibberellins |
| gaseous plant hormone that affects the ripening of fruits | ethylene |
| plant hormone that promotes cell division by stimulating production of proteins required for mitosis and cytokinesis | cytokinin |
| reversible, responsive movement of a plant that occurs independent of the direction of the simulus | nastic response |
| response to an external stimulus in a specific direction | tropism |
Created by:
Kdunivan
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