| A | B |
|---|
| taproot | type of primary root |
| fibrous root | some plants, including grass |
| epidermis | thin layer of cells that take water |
| cortex | transports water inward through roots |
| dormancy | when plants growth slows or stops |
| rhizome | thick stems growing beneath ground |
| tuber | modefied underground stems |
| bulb | flowers with underground stems |
| corm | bulbs with very thin leaves |
| petiole | attaches stem to blades of leaves |
