What are tracheary elements? describe their functions?
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Vascular plants have two kinds of Tracheary Elements: Tracheids & Vessel Members.
Conifers have only tracheids. Woody angiosperms have also vessels.
ITRACHEIDS - Elongated tapering, dead at functional maturity
Shape: very longCell wall: : primary and secondary, lignifiedContains pits but no perforations.Function: Xylem Chief water-conducting element in gymnosperms and lower vascular plants, also found in Angiosperm xylem.IIVESSEL MEMBER - Elongated tapering (but generally shorter than tracheids), Dead at functional maturity. Shape: Vessels are composed of vessel members in series connected by perforation plates.Cell wall: primary and secondary, lignified.Function: Xylem Chief water-conducting element in Angiosperm xylem.
Conifers have only tracheids. Woody angiosperms have also vessels.
ITRACHEIDS - Elongated tapering, dead at functional maturity
Shape: very longCell wall: : primary and secondary, lignifiedContains pits but no perforations.Function: Xylem Chief water-conducting element in gymnosperms and lower vascular plants, also found in Angiosperm xylem.IIVESSEL MEMBER - Elongated tapering (but generally shorter than tracheids), Dead at functional maturity. Shape: Vessels are composed of vessel members in series connected by perforation plates.Cell wall: primary and secondary, lignified.Function: Xylem Chief water-conducting element in Angiosperm xylem.
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