- July 27, 2005 at 6:17 pm #1546Rebeccat478Participant
Why are mosses considered to be non-vascular plants? I know it has something to do with their vascular tissue. But what? I’ve spent 2 hours in my book and I can’t find it.
- July 27, 2005 at 6:20 pm #27602MrMisteryParticipant
Do u know what plant vascular tissue means? Mosses do not have any xylem or phloem so they are avascular
- July 27, 2005 at 8:58 pm #27614th1_rhs13Participant
Mossses are also bryophytes, they have Rhizodes which aren’t true roots. Thus, Avascular.
Increase your reading skills, or play with sites dictionary.
- July 28, 2005 at 1:35 am #27624Dr.SteinParticipant
Just a little bit correction:
Avascular plant is a plant that does not have vascular bundles (xylem, pholem) for their trasportation system. Mosses are avascular because they just us modified parenchymes to do this job as they don’t have those bundles.
Avascular plant is NOT a plant that does not have true root! That’s not a proper definition. You should make a good definition by looking the etimology of the term.
– If a plant does not have true root (radix) and just rhizoid, it is called as thallus
– If a plant does have true root, it is called as cormus.
@ MOD: Would someone please change the title thus match to the content? Thank you.
- July 28, 2005 at 4:52 am #27636th1_rhs13Participant
Thanks for clearing that up. Botany is not my focal pont, I thought I could comment on the matter but I stand corrected.
- November 18, 2014 at 1:01 am #115564BasicBiologyParticipant
Mosses are considered to be non-vascular plants because they lack xylem and phloem. The phloem and xylem are used to transport fluids and gases through vascular plants. Instead, in mosses, water is transported by cell-to-cell diffusion and this inefficient way to transport fluid limits the height and environments that mosses can survive in (mosses are only found in moist environments).
There is a brief overview of mosses here – http://basicbiology.net/plants/lycophytes/mosses.php
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