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Liverworts are a division of plants commonly called hepaticeae, Marchantiophyta or liverworts.

They all belong to original and still used Division name- Bryophyta.

They are typically small plants that are often overlooked. They frequently have the appearance of small irregular leaf-like plaques, often covering large areas of the ground but they may also occur on rocks, trees or any other reasonably firm substrate.

They can also take on a form very much like flattened mosses. They most often occur in damp locations and are typically found in moderate to deep shade.

Some species can be a nuisance in shady green-houses. They do not have flowers or seeds.

These are close relatives of true mosses.

Examples - 1) Riccia natans- click on the link below.
http://www.csun.edu/~hcbio028/Riccia.jpg

2)Ricciocarpon-
http://ftp.funet.fi/pub/sci/bio/life/plants/bryophyta/hepaticopsida/marchantiales/ricciaceae/ricciocarpos/natans-1.jpg

3)Marchantia-
http://www.kuleuven-kortrijk.be/facult/wet/biologie/pb/kulakbiocampus/mossen/Marchantia%20polymorpha%20-%20Steenlevermos/Marchantia%20polymorpha-parapluutjesmos-01.jpg

4) Anthoceros--
http://www.bi.ku.dk/tavler/thumbs/012,01.jpg

I hope it is helpful to you.

2007-03-27 01:16:31 · answer #1 · answered by Anonymous · 0 0

This Site Might Help You.

RE:
Does anyone know two organisms that belong to the Hepatophyta phylum of the Plantae kingdom?

2015-08-18 19:58:16 · answer #2 · answered by Mackenzie 1 · 0 0

Marchantia and Riccia were the ones I encountered in my Botany Laboratory classes last year. Marchantia is the favored representative of the Division Hepaticophyta.

Both Marchantia and Riccia are thallose liverworts. Marchantia is a dioecious genera. As far as I know, Riccia may be monoecious or dioecious.

The ribbon like thallus of Riccia are called rosettes. They are normally yellow green, but in symbiont with cyanobacteria appear blue green.

Both Marchantia and Riccia has a dorsiventral thallus. Air chambers and pores on the ventral surface and chlorenchyma on the dorsal surface.

I like to elaborate Marchantia more, so I won't talk about Riccia anymore.

Marchantia has stalk-like gametophores growing upward the gametophyte. In the female is the archegoniophore, in the male, the antheridiophore. Both houses the respective gametangium; the archegonium and the antheridium.

The archegonium contains the egg cell, the antheridium the sperm cell, and when the sperms are dispersed by splashing, he gametes fuse in a process called syngamy. They produce a zygote that undergoes mitosis to become multicellular embryo. The embryo gives rise to the sporophyte. This is sexual reproduction.

Asexual reproduction is through gemmae housed in gemma cups distributed around the gametophyte thallus. The process is that each gemmae may germinate into a new thallose liverwort.

So far, that's all I know. Thanks. Hope I helped.

2007-03-26 18:24:40 · answer #3 · answered by Eloise 2 · 1 0

I know three extant genera: Lycopodium, Selaginella, and Isoetes. Lycopodium is commonly called clubmosses because of their club-shaped reproductive cones termed strobili (sing. strobilus). The strobilus is an aggregate of sporophylls which hold homospores. The condition is called homospory, and the consequence is a monoecious gametophyte. They were the first to have true roots, and their leaves are rather not leaves because they are single-veined and has only one strand of vascular tissue, thus the term, microphylls (in extinct species are called lycophylls). The stems branch dichotomously, have no leaf gaps, and the microphylls are isomicrophyllous, showing no leaf dimorphism. Selaginella, commonly called small club moss, spike moss and ressurection plant also has true roots and club shaped strobili at the terminal portion of the plant. The stem also branches dichotomously like Lycopodium, but it has the presence of leaf gaps. True roots also exist in this genera, but are borne on a root bearing structure called rhizophore, a white cylindrical structure. Microphylls show leaf dimorphism- four-ranked having outer lateral leaves and smaller inner leaves with ligules on the undersurface. The ligules are hygroscopic. The most notable difference of Selaginella from Lycopodium is that they are heterosporous, and the consequence is a dioecious gametophyte. Both Lycopodium and Selaginella have aerial photosynthetic stems. Not much to say about Isoetes. They are commonly called quillworts because of their quill-like leaves. The underground stems are corms. Like Selaginella, are heterosporous and grow inward (endogenous). They are also classsified as Lycopodiophytes because of the club-shaped strobili and single-veined leaves with one strand of vascular tissue. Hope I cited everything you need to know. Thanks.

2016-03-12 21:09:13 · answer #4 · answered by Anonymous · 0 0

All I did was put "Hepatophyta Phylum" into Google and came up with Liverworts and mosses.

2007-03-26 16:45:04 · answer #5 · answered by bakfanlin 6 · 0 0

Hepatophyta

2016-10-05 05:37:10 · answer #6 · answered by enegess 4 · 0 0

Hepatophyta includes the liverworts, so just name two different liverworts.

Notchwort
Marchantia

http://internt.nhm.ac.uk/jobj/runjava.jobj?java=ctol.CTOLServer&method=printNamePage&accountref=987&NAMEID=21970

2007-03-26 16:44:35 · answer #7 · answered by ecolink 7 · 0 0

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