| TERM | GROUP | DEFINITION | |
|---|---|---|---|
| XANTHOPHYLL | N | PLANTS, PROTISTS, BACTERIA | Pronunciation: Etymology: Xanthophyll is an oxygenated carotenoid secondary photosynthetic pigment that occurs in many of the photosynthetic eukaryotes. |
| XYLEM | N OR ADJ | PLANTS | Pronunciation: Etymology: Xylem is vascular tissue that conducts water and functions when the cells are dead. Cell types include tracheids, xylem fibers, and vessels. |
| XYLEM FIBERS | NP | PLANTS | Pronunciation: Etymology: Xylem fibers are specialized non-conducting xylem cells with thick walls. |
