Talk:Non-vascular plant

message: The textbox says that vascular plants do not have a rank... this is totally not true, vascular plants are within Subkingdom Bryophyta. Dilbert 00:33, 18 May 2006 (UTC)
replies: text: Your information is incorrect. The bryophytes are a subgroup of the non-vascular plants, which also includes green algae, and sometimes other groups as well. The group has no official standing in any current classification system, and is no longer considered a formal taxon at any rank. --EncycloPetey 23:15, 22 May 2006 (UTC)
thread_title: Rank of vascular plants

message: I think it's a bit redundant to explain the difference between vascular and non-vascular plants twice in the intro. Isopropyl 20:27, 1 August 2006 (UTC)
replies: text: While I understad what you mean, I can see why the text was originally put in there.  The current text talks about algae AND (land plants that lack vascular tissue).  That is, the phrase "lack vascular tissue" might be interpreting as only applicable to the land plants that are included, leavin open the question of algae having vascular tissue (if you were coming to this article without knowing much about those "plants").  However, the text you removed should be removed for the more important reason that it was incorrect -- some non-vascular plants do have specialized conducting tissues.  Some kelps, mosses, and liverworts have central conducting strands of specialized cells anatomically different from the surrounding tissues. --EncycloPetey 04:03, 2 August 2006 (UTC)
thread_title: Redundant text

message: i heard all algae are protist. this need to be researched.  —Preceding unsigned comment added by 75.177.137.162 (talk) 23:19, 7 October 2008 (UTC)
replies: text: Why do we need to research something you heard?  Where?  From whom?  Only grade-school books still use "Protist" as a coherent kingdom.  College-level texts reflect current research that algae are not a single related group, but a grab-bag assemblage of unrelated organisms that happen to have chlorophyll.  Some of them are plants, some are bacteria, and some belong to other groupings. --EncycloPetey (talk) 23:44, 7 October 2008 (UTC)

text: Whether you read my comments as genuine and educational the way I intended, or choose to believe the answer is stuck up and snappy is entirely your choice.  My point is that (1) You posted that you had "heard" something, but did not tell us where you had heard it.  Without that information, we cannot check up on the source from which you heard it.  Just like any other information posted, we need to know where it comes from in order to check it out. (2) You said research was needed, but did not tell us what you meant by that.  Did oyu mean that scientists need to do more resarch to determine the "truth"? Did you mean that people on Wikipedia need to research current the current state of scientific knowledge?  Or did you mean something else?  Short, terse statements without any context are not helpful stating points for discussion.  Add to that the fact that you altered the article based on what you had "heard" without identifying any source.  My comments were thus intended to encourage you to question your edit and expand on your original posting. I'm sorry that you took my comments the wrong way. --EncycloPetey (talk) 15:30, 8 October 2008 (UTC)
replies: text: I think algae are protists as stated in Modern Biology by: Albert Towle et al.Etineskid (talk) 21:35, 25 May 2009 (UTC)

text: Why is that?  Why should the number of cells generated to produce a mature form matter in determining evolutionary relationships?  All sexually-reproducing plants go through a single-celled stage during their lives.  The molecular evidence also demonstrates a close relationship between all the green algae and other plants. --EncycloPetey (talk) 01:46, 22 April 2010 (UTC)

text: Your analysis is inaccurate in several respects. Protists are an artificial group of many different types of organisms with no clear relationships to each other. Only some of the organisms that are often placed in that group are regarded as algae.  It is not correct to lump all algae together - they are of many different types, not all closely related, and not all related to land plants. However, like plants, many algae are multicellular with different tissue types, can maintain complex structures, have cellulose and some have long distance transport systems. Many people regard modern green algae as plants, others reserve the name for land plants and consider green algae as a sister group (or groups) that share(s) common ancestors with plants. Either way they have a place in this discussion of non-vascular plants. Plantsurfer 21:56, 11 February 2016 (UTC)

text: Also, most green algae have cellulose and a great many are multicellular and maintain structure. --EncycloPetey (talk) 03:29, 12 February 2016 (UTC)

text: What is taught in the US varies from institution to institution. Many universities in the US have abandoned the teaching of "protists" altogether, since that group is grossly paraphyletic. Also, you might wish to re-examine the Laminariales, a group of algae with complex tissues, tissue layering, and multicellular reproductive structures. --EncycloPetey (talk) 03:17, 24 February 2016 (UTC)

text: No, it really isn't that simple. The category "seaweed", for example includes algae that are regarded as plants (Green algae) and algae that are not regarded as plants (Brown algae). Green algae includes unicellular organisms and multicellular organisms, and "pond scum" includes some surprisingly sophisticated plant species that are the closest known ancestors of land plants. Plantsurfer 01:16, 29 February 2016 (UTC)
thread_title:  Are algae protist or plants? 

message: What are they?the article doesnt mention any....
Jjohnston90 (talk) 22:03, 28 March 2009 (UTC)
replies: text: Neither does the article on life.  The "non-vascular plants" are a huge assemblage of organisms that are only distantly related and which have little in common other than lacking vascular tissue.  A summary of their economic value would not be meaningful.  This information is better presented in the article for each natural grouping. --EncycloPetey (talk) 04:23, 29 January 2010 (UTC)
thread_title:  Uses of nonvascular plants for humans 

message: These two lines follow each other in the article, but directly contradict each other. Only one can be true. 
:...a number of non-vascular plants possess tissues specialized for internal transport of water.
:Non-vascular plants means that they do not have specialized tissue.
Something tells me the second is wrong since I can't imagine there exists anything in nature that is non-specialized, but I don't know.--Atkinson (talk) 09:22, 8 December 2010 (UTC)
replies: text: Some non-vascular plants lack developmentally differentiated tissue, which is part of what the second sentence is about.  The "defining" characteristic of the vascular plant clade (according to workers like Kenrick & Crane) is the presence of "true" xylem containing lignin in the secondary wall.  It is the presence/absence of this specialized xylem tissue that separates vascular from non-vascular plants. --EncycloPetey (talk) 19:54, 8 December 2010 (UTC)
thread_title:  Specialized tissue 

message: Amborella are angiosperms but they do not have vessel elements[1] They are not included..  Existent human being (talk) 07:46, 24 February 2023 (UTC)
replies: text: what is your point? Amborella has xylem, so are included in vascular plants.Plantsurfer 12:10, 24 February 2023 (UTC)
replies: text: The xylem is said to be a tissue: "Xylem is one of the two types of transport tissue", so it should have multiple types of cells, but the article says it consists of only tracheids, meaning it can not be considered a tissue. Existent human being (talk) 14:12, 8 March 2023 (UTC)

text: Thanks, I thought a tissue has to consist of multiple different cells. I relized that is not the definitition. Existent human being (talk) 14:22, 8 March 2023 (UTC)
thread_title:  Amborella 

message: — Assignment last updated by Warmedforbs (talk) 01:25, 18 April 2024 (UTC)
thread_title: Wiki Education assignment: Applied Plant Ecology Winter 2024