Answers to all your Biology Questions
|
|
Dictionary » M » Metaxylem MetaxylemDefinition noun The xylem that is last to form or develop, characterized by broader tracheary elements and weblike or pitted surfaces.
The metaxylem forms later after protoxylem has formed. In a young stem, the protoxylem consists of tracheary element with annular or spiral thickenings, hence, capable of stretching or elongating (for stem growth). As the stem gets older, the stem stops elongating and the tracheary elements become more filled in.
Please contribute to this project, if you have more information about this term feel free to edit this page
Results from our forumquestion about position of proto and meta xylem in plantMy guess is that as the name suggests, protoxylem is formed first and hence has more lignin deposition over time than the Metaxylem that forms later during a plant's growth. It is due to this that protoxylem has a narrower lumen due to excess lignification. As for their relative positions, ...
See entire post
question about position of proto and meta xylem in plantwhy protoxylem occur outside in roots and inside in stems and vice versa with metaxylem . is there any relation of them with the functions , then pls tell there separate functions
See entire post
what are the functions of protoxylem and metaxylem ?i am really stuck , and i want to know why in roots exarch conditions , and in stems endarch is found ? pls tell , urgent :? :? :? :? :? :? :mrgreen:
See entire post
This page was last modified 10:05, 16 March 2009. This page has been accessed 1,979 times. |
© Biology-Online.org. All Rights Reserved.
Register | Login
| About Us | Contact Us | Link to Us | Disclaimer & Privacy