1.

Vessels are found inA. all angiosperms and some gymnospermsB. most of angiosperms and few gymnospermsC. all angiosperms and few gymnosperms and some pterdophytesD. all pteridophytes

Answer» Correct Answer - b
Most anigosperms have vessels except a few (e.g. Drimys, Tetracentron , Trochodendron).The gymnosperms, as a rule , lack vessels but these are found in the order - Gnetales . Vessels are the constituent of xylem . They are composed of row of cells placed one above the other . Transverse wall of these cells is absent due to the dissolution.


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