| A | B |
|---|
| PARENCHYMA CELL | MOST FLEXIBLE, THIN-WALLED CELLS FOUND THROUGHOUT THE PLANT: STORAGE, PHOTOSYNTHESIS, GAS EXCHANGE, PROTECTION, TISSUE REPAIR AND REPLACEMENT |
| COLLENCHYMA CELL | ELONGATED CELLS THAT OCCUR IN LONG STRANDS OR CYLINDERS: SUPPORT FOR SURROUNDING TISSUES, PROVIDES FLEXIBILITY FOR PLANT, TISSUE REPAIR AND REPLACEMENT |
| SCLERENCHYMA CELL | CELLS THAT LACK CYTOPLASM AND OTHER LIVING COMPONENTS WHEN MATURE: THICK, RIGID CELL WALLS: SUPPORT AND TRANSPORT OF MATERIALS |
| MERISTEM | REGIONS OF RAPIDLY DIVIDING CELLS |
| VASCULAR CAMBIUM | THIN CYLINDERS OF MERISTEMATIC TISSUE THAT CAN RUN THE ENTIRE LENGTH OF ROOTS AND STEMS |
| CORK CAMBIUM | PRODUCES CELLS THAT DEVELOP TOUGH CELL WALLS: PROTECTIVE OUTSIDE LAYER ON STEMS AND ROOTS |
| EPIDERMIS | THE LAYER THAT MAKES UP THE OUTER COVERING ON A PLANT |
| GUARD CELL | TWO CELLS SURROUNDING A STOMATA |
| XYLEM | WATER-CARRYING VASCULAR TISSUE MADE OF VESSEL ELEMENTS AND TRACHEIDS |
| VESSEL ELEMENT | TUBLAR CELLS THAT WHEN STACKED END TO END FORM XYLEM |
| TRACHEID | LONG CYLINDRICAL CELLS WITH PITTED ENDS THAT MAKE UP XYLEM |
| PHLOEM | THE MAIN FOOD-CARRYING TISSUE |
| SIEVE TUBE MEMBER | A CELL THAT LACKS A NUCLEUS WHEN MATURE AND MAKES UP PHLOEM |
| COMPANION CELL | CELL THAT IS PART OF PHLOEM AND HAS A NUCLEUS |
| GROUND TISSUE | PARENCHYMA, COLLENCHYMA, AND SCLERENCHYMA CELLS: DIVERSE FUNCTIONS INCLUDING PHOTOSYNTHESIS, STORAGE, AND SUPPORT |
| APICAL MERISTEM | TISSUES AT THE TIPS OF ROOTS AND STEMS: PRODUCE PRIMARY GROWTH |
| INTERCALARY MERISTEM | MERISTEMS FOUND AT SEVERAL LOCATIONS: THE REASON GRASS CONTINUES TO GROW |
| TRICHOMES | HAIRLIKE PROJECTIONS ON EPIDERMAL CELLS |
| ROOT CAP | PARENCHYMA CELLS THAT COVER THE TIP OF THE ROOT AND PROTECT IT AS THE ROOT GROWS |
| CORTEX | LAYER BELOW THE EPIDERMAL CELLS |
| ENDODERMIS | INNER BOUNDARY OF THE CORTEX |
| PERICYCLE | LAYER OF CELLS DIRECTLY NEXT TO THE ENDODERMIS TOWARD THE CENTER OF THE ROOT |
| PETIOLE | A STALK THAT ATTACHES THE LEAF TO A STEM |
| TRANSPIRATION | WATER EVAPORATING FROM INSIDE THE LEAF TO THE OUTSIDE THROUGH STOMA |
| HERBACEOUS | SOFT, FLEXIBLE, GREEN |
| TUBER | UNDERGROUND STEM OF A POTATO |
| BULB | A SHORTENED, COMPRESSED STEM SURROUNDED BY FLESHY LEAVES: ONION OR TULIP |
| RHIZOME | UNDERGROUND, HORZONTAL STEMS: IRISES AND FERNS |
| RUNNER/STOLON | HORIZONTAL STEMS THAT GROW ALONG THE SOIL'S SURFACE: STRAWBERRY AND BERMUDA GRASS |
| CORMS | COMPACT STEM WITH SCALY LEAVES AT THE TOP: CROCUSES AND GLADIOLAS |
| AUXIN | PLANT HORMONE THAT PRODUCES AND ELONGATION OF CELLS ON THE SIDE OPPOSITE OF THE SUN |
| GIBBERELLINS | A GROUP OF PLANT HORMONES THAT CAN EFFECT SEED GROWTH, STIMULATE CELL DIVISION, AND CAUSE CELL ELONGATION |
| ETHYLENE | A GASEOUS PLANT HORMONE THAT EFFECTS THE RIPENING OF FRUIT |
| CYTOKININ | A PLANT HORMONE THAT PROMOTES CELL DIVISION |
| TROPISM | A PLANT'S GROWTH RESPONSE TO AN EXTERNAL STIMULUS |
| PHOTOTROPISM | A GROWTH RESPONSE TO LIGHT CAUSED BY AN UNEQUAL DISTRIBUTION OF AUXIN |
| GRAVITROPISM | A GROWTH RESPONT TO GRAVITY: ROOTS ARE POSTIVE: STEMS ARE NEGATIVE |
| THIGMOTROPISM | A GROWTH RESPONSE TO CONTACT WITH AN OBJECT: VINES |
