| A | B |
|---|
| Fibrous root | a mat of shallow thin roots |
| Taproot | a thick vertical root |
| Mycorrhizae | a symbiotic relationship between fungus and plant roots |
| Shoots | plant parts above the ground. |
| Stems | function in a plant to display the leaves |
| Terminal bud | a growth tip at the end of a stem |
| Axillary buds | buds located in the V between leaf and stem |
| Leaves | the main photsynthetic organ in plants |
| Dermal tissue | plant outer covering of closely packed cells |
| Cuticle | a waxy outer layer on a leaf |
| Vascular tissue | transport tissue in plants |
| Xylem | Vascular tissue that transports water and minerals up |
| Phloem | vascular tissue that transports food from the leaves to the rest of the plant |
| Ground tissue | plant tissue that is neither dermal or vascular |
| Parenchyma cells | metabolic cells in the leaf |
| Collenchyma | bundled support cells |
| Sclerenchyma cells | tough cell walls in non-growing parts of the plant |
| Tracheids | long, thin xylem cells |
| Vessels | xylem cells in Angiosperm |
| Sieve tube elements | conducting cells in phloem |
| Companion cells | connected to sieve tube cells to direct cell activities |
| Annuals | plants with a one year life cycle |
| Biennials | plants with a two year life cycle |
| Perennials | plants with a life cycle over many years |
| Meristems | perpetually embronic tissue |
| Apical meristems | tips of roots and shoots |
| Lateral meristems | growing tissue that thickens roots and shoots |
| Root cap | part of the root that protects the root tip as it grows and pushes through the soil |
| Zone of cell division | region of the root that contains the apical meristem |
| Zone of elongation | region of the root behind the root tip where cells elongate |
| Zone of maturation | area where cells complete their differentiation and become mature |
| Stomata | small pores on the underside of the leaf |
| Guard cells | cells which open and close the stomata |
| Vascular cambium | produces secondary xylem (wood) |
| Cork cambium | produces a tough covering that replaces the epidermis early in secondary growth |
| Bark | all the tissue outside the vascular cambium |
| Morphogenesis | the development of body form and organization |
| Pattern formation | the development of specific structures in specific locations |
| Positional information | signals that indicate to each cell its location within a devveloping structure |
| Polarity | The condition of having structural differences at opposite ends of an organism |
