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Primary xylem

Definition

noun

The xylem formed during the primary growth from procambium of root and shoot apex.


Supplement

Non-woody plants have only the primary xylem and lack secondary xylem. The primary xylem consists of small tracheids and vessels.


Compare: secondary xylem


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Question on Xylem and Phloem; primary and secondary

... Here is my question. "What is the difference in the formation of primary xylem and phloem versus secondary xylem and phloem?" What I put/am thinking, is that primary ...

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by naturalgoats
Wed Nov 23, 2011 7:43 pm
 
Forum: Botany Discussion
Topic: Question on Xylem and Phloem; primary and secondary
Replies: 2
Views: 5024

Secondary walls in tracheary elements

... can help me out here. I understand that secondary walls are laid in xylem tissue in one of the following ways: annular thickenings, helical thickenings, ... thickenings. My questions are as follows: 1. Are these only present on primary xylem and there is a different kind of deposition pattern in ...

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by botanygirl
Mon Nov 10, 2008 7:50 pm
 
Forum: Botany Discussion
Topic: Secondary walls in tracheary elements
Replies: 0
Views: 2525

TO ANYBODY THAT HAS ANYQUESTIONS ON PHOTOSYNTHESIS

... transported up to the leaves through specialized plant cells known as xylem (pronounces zigh-lem). Land plants must guard against drying out (desiccation) ... is "boosted" to a higher energy state and attached to a primary electron acceptor, which begins a series of redox reactions, passing ...

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by CoolJay221
Thu Feb 09, 2006 7:14 pm
 
Forum: Botany Discussion
Topic: TO ANYBODY THAT HAS ANYQUESTIONS ON PHOTOSYNTHESIS
Replies: 5
Views: 11279

Question: Does a plant constantly go through photosynthesis?

... transported up to the leaves through specialized plant cells known as xylem (pronounces zigh-lem). Land plants must guard against drying out (desiccation) ... is "boosted" to a higher energy state and attached to a primary electron acceptor, which begins a series of redox reactions, passing ...

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by CoolJay221
Thu Feb 09, 2006 6:51 pm
 
Forum: Botany Discussion
Topic: Question: Does a plant constantly go through photosynthesis?
Replies: 3
Views: 8398
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