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 A thallose liverwort, Lunularia cruciata
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Simple nonvascular plants |
Non-vascular plants is a general term for those plants (including the green algae) without a vascular system (xylem and phloem). Plants are living Organisms belonging to the kingdom Plantae. The green algae (singular green alga) are the large group of Algae from which the Embryophytes (higher plants emerged Mosses are small soft Plants that are typically 1–10 cm (0 The Marchantiophyta are a division of Bryophyte Plants commonly referred to as hepatics or liverworts. This is an article about the non-vascular plants The name Hornwort is also often applied to an aquatic plant Ceratophyllum demersum in the family Ceratophyllaceae Plants are living Organisms belonging to the kingdom Plantae. The green algae (singular green alga) are the large group of Algae from which the Embryophytes (higher plants emerged This is an article about vascular tissue in plants For transport in animals see Circulatory system. In Vascular plants xylem is one of the two types of transport tissue Phloem being the other In Vascular plants phloem is the living tissue that carries organic Nutrients (known as photosynthate particularly Sucrose, a sugar to Although non-vascular plants lack these particular tissues, a number of non-vascular plants possess tissues specialized for internal transport of water. Water is a common Chemical substance that is essential for the survival of all known forms of Life.
Non-vascular plants have no roots, stems, or leaves, since each of these structures is defined by containing vascular tissue. ROOT is an object-oriented program and library developed by CERN. A stem is one of two main structural axes of a Vascular plant. In Botany, a leaf is an above-ground Plant organ specialized for Photosynthesis. This is an article about vascular tissue in plants For transport in animals see Circulatory system. The lobes (rounded parts) of the liverwort may look like leaves, but they are not true leaves because they have no xylem or phloem. In Vascular plants xylem is one of the two types of transport tissue Phloem being the other In Vascular plants phloem is the living tissue that carries organic Nutrients (known as photosynthate particularly Sucrose, a sugar to Likewise, mosses and algae have no such tissues.
All plants have a life cycle with an alternation of generations between a diploid sporophyte and a haploid gametophyte, but nonvascular plants include the only plants that have a dominant gametophyte generation. The Alternation of phases (or generations) describes the life cycle of Plants Fungi and Protists A multicellular Diploid phase alternates All land plants and some Algae, have life cycles in which a haploid Gametophyte generation alternates with a Diploid sporophyte, the generation of a In Plants and Algae that undergo Alternation of generations, a gametophyte is the multicellular structure or phase that is Haploid, containing In these plants, the sporophytes grow attached and are dependent on gametophytes for taking in water and other materials. Non-vascular plant grow from spore.
Non-vascular groups
The term non-vascular plant is no longer used in scientific nomenclature. Non-vascular plants include two distantly related groups:
- Bryophytes - the Bryophyta (mosses), the Marchantiophyta (liverworts), and the Anthocerotophyta (hornworts). Bryophytes are all Embryophytes ('land Plants) that are non-vascular: they have tissues and enclosed reproductive systems but they lack Vascular tissue Mosses are small soft Plants that are typically 1–10 cm (0 The Marchantiophyta are a division of Bryophyte Plants commonly referred to as hepatics or liverworts. This is an article about the non-vascular plants The name Hornwort is also often applied to an aquatic plant Ceratophyllum demersum in the family Ceratophyllaceae In these groups, the primary plants are the haploid gametophytes, with the only diploid portion being the attached sporophyte, consisting of a stalk and sporangium. "Haplo" redirects here For the fictional character see The Death Gate Cycle. In Plants and Algae that undergo Alternation of generations, a gametophyte is the multicellular structure or phase that is Haploid, containing "Haplo" redirects here For the fictional character see The Death Gate Cycle. All land plants and some Algae, have life cycles in which a haploid Gametophyte generation alternates with a Diploid sporophyte, the generation of a A sporangium (pl sporangia) is a Plant or fungal structure producing and containing Spores Sporangia occur in angiosperms, Because these plants lack the water-conducting tissues, they fail to achieve the structural complexity and size of most vascular plants. Vascular plants (also known as tracheophytes or higher plants) are those Plants that have lignified tissues for conducting
- Algae - especially the green algae. Algae ( sing. alga are a large and diverse group of simple typically Autotrophic organisms ranging from Unicellular to Multicellular forms The green algae (singular green alga) are the large group of Algae from which the Embryophytes (higher plants emerged Recent studies have demonstrated that the algae actually consist of several unrelated groups. It turns out that common features of living in water and photosynthesis were misleading as indicators of close relationship. Photosynthesis is a Metabolic pathway that converts Light Energy into Chemical energy. Only the green algae are still considered relatives of the plants.
Both of these groups are occasionally termed the "lower plants"; the term "lower" refers to these plants' status as the earliest plants to evolve. However, the term "lower" plants is not precise, since it frequently is used to include some vascular plants, the ferns and fern allies. This is an article about vascular tissue in plants For transport in animals see Circulatory system. A fern is any one of a group of about 20000 Species of Plants classified in the phylum or division Pteridophyta, also known as Filicophyta Fern ally is a general term covering a somewhat diverse group of Vascular plants that are not Flowering plants and not true Ferns Like ferns these plants
In the past, the term non-vascular plant included all the algae, but also the fungi as well. Algae ( sing. alga are a large and diverse group of simple typically Autotrophic organisms ranging from Unicellular to Multicellular forms A fungus (ˈfʌŋgəs is a eukaryotic Organism that is a member of the kingdom Fungi (ˈfʌndʒaɪ Today, it is recognized that these groups are not closely related to plants, and have a very different biology. Foundations of modern biology There are five unifying principles
See also
External links
Vascular plants (also known as tracheophytes or higher plants) are those Plants that have lignified tissues for conductingDapyx Software network: MP3 Explorer | Ebook Manager | Zenithic