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in Plant Tissue - Internal Morphology and Anatomy by (49.3k points)
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What is the difference between tracheids and vessels in xylem ?

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S.No Property Tracheids Vessels
1. Plants containing them In all vascular elements(Pteri – dophytes, gymno – sperm and angio – sperms) Found mainly in angiosperms. Also in some pterido- phytes (e.g sela- ginella, Equisetum and pteridium) and gymnosperms (eg Gnetales)
2. Length Comparatively short and rarely exceed 1 mm in length Usually long and may attain 10 cm in length. Rarely reach to 2-6 metres (Quercus, Eucalyptus)
3. Shape Elongated with tapering ends end wall remains intact. Cells placed one upon the other and their end walls are either absent or possess perforation
4. Cell cavities Not much wide Wide as compared to tracheids.

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