| A | B |
|---|
| parenchyma tissue | is composed of thin-walled cells found in leaves, stems, and roots |
| sclerenchyma | cells have tough, thick cells that strengthen and support plant tissues |
| xylem | conducts water |
| sieve tube elements | phloem cells arranged end to end; conducts a variety of plant products |
| companion cells | keep their nuclei and other organelles throughout their lifetime |
| root tissues | epidermis, cortex, and vascular |
| root hairs | absorb dissolved nutrients from soil spaces through the process of active transport |
| Casparian strip | prevent water molecules from seeping back between cells |
| root pressure | part of the driving force behind the movement of water from roots to leaves |
| cortex | transports water and nutrients inward through the root and may sotre sugars or starches |
| parenchyma | distributed throughout the stem and is often used for storage |
| bark | formed by phloem tissue |
| vascular cambium | makes more xylem and phloemcells, enabling the stem to grow thicker |
| dormancy | a plant's growth slows or stops |
| rhizomes | thick, fleshy, creeping stems that grow either along or just beneath the surface of the ground |
| tubers | modified underground stems that are swollen with stored food, usually in the form of starch |
| bulbs | tulips and daffodils |
| blades | collect sunlight |
| cuticle | waterproof waxy coating |
| stomata | small openings found in plant cells that control the loss of water |
