The chief water conducting elements of xylem in gymnosperms are:
1. vessels
2. fibres
3. transfusion tissue
4. tracheids
Vessels are found in:
1. | All angiosperms and some gymnosperm |
2. | Most of the angiosperm and few gymnosperms |
3. | All angiosperms, all gymnosperms, and some Pteridophyta |
4. | All pteridophyta |