| Term | Definition |
|---|
| guttation | the appearance of water droplets along the margins of leaves during the night |
| sclerenchyma | has a thick, reinforced, secondary cell wall |
| hydathodes | Special openings in the leaf margins of some small herbaceous plants that permit water escape |
| tension | Describes the negative pressure generated in xylem tubes during transpiration |
| active transport | how the Mineral ions are obtained from the soil |
| sclerenchyma | tissue that contains cells that are dead at maturity |
| xylem | responsible for transporting water and some minerals through the plant |
| osmosis | The process responsible for water movement into the roots of plants |
| hydrogen bonds | chemical bond that is responsible for water's cohesive and adhesive properties |
| transpiration-cohesion-tension mechanism | The process of water movement through a plant |
| potometer | The device used to measure the amount of transpiration occurring from a plant |
| root pressure | pressure that builds up in the vascular system of some small plants to force water out of the plant's leaves |
| guard cells | Specialized cells that are able to open and close the openings in the leaf epidermis depending upon the environmental conditions. |
| root hairs | The specialized, absorptive structures found on vascular plant root cells |
| parenchyma | the tissue that the pith and cortex of a plant stem are composed of |
| microtome | The instrument used to make very thin sections of plant material for microscopic viewing |
| collenchyma | the "strings" in celery |
| transpiration | mainly responsible for moving water to the top of a 30 m tall tree |
| parenchyma | responsible for storing nutrients, such as starch grains |
| stomata | Openings in the leaves of plants that allow gas exchange with the environment |
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