AIIMS2018BotanyAnatomy of Flowering Plants
Vessels in xylem are found in
Options
- Aall angiosperms and gymnosperms
- Bmost of angiosperms and few gymnosperms
- Cfew angiosperms, all gymnosperms and some pteridophytes
- Dall pteridophytes.
Correct answer
B. most of angiosperms and few gymnosperms
Step-by-step solution
Vessels occur in the wood (both primary and secondary xylem) of almost all angiosperms. But in some angiosperms like Dracaena, Yucca etc., they are absent. Vessels are also absent in the wood of most gymnosperms (except Gnetales) and pteridophytes.