Hornwort
:This is an article about the non-vascular plants. The name Hornwort is also often applied to the aquatic plant Ceratophyllum demersum in the family Ceratophyllaceae ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Hornworts (or horned liverworts) are a group of non-vascular plants comprising the class Anthocerotae. The common name refers to the elongated horn-like structure, which is the sporophyte, growing from an archegonium embedded deep in the gametophyte thallus. The green plant body of a hornwort is the gametophyte plant. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Hornworts possess a basal meristem and contain just one chloroplast per cell. Unlike other bryophytes, the hornworts have true stomata. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ In this classification scheme, there are two orders of hornworts. Hornworts were traditionally considered a class within the Division Bryophyta, (bryophytes). However, it now appears that this group is paraphyletic, so they tend to be given their own division, called Anthocerotophyta. There is a single class, called Anthocerotopsida. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Non-vascular plant: Simple nonvascular plants... Sporophyte: A sporophyte is the diploid structure or phase of life of a sexually reproducing plant. Each living cell of the sporophyte contains two complete sets of chromosomes. The sporophyte is the dominant life form in ferns, gymnosperms, and angiosperms (flowering plants).... Archegonium: An archegonium (pl: archegonia) (from the Greek arche = beginning and gonos = born) is a multicellular structure or organ of the gametophyte phase of certain plants producing and containing the ovum or female gamete.... | ~ Table of Content ~
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~ Related Subjects ~Gametophyte (2) - Gymnosperm (1) - Fern (1) - Diploid (1) - Chromosome (1) - Angiosperms (1) - Ovum (1) - Gamete (1) - Greek (1) - Plant (1) - Paraphyletic (1) - Archegonium (1) - Meristem (1) - Non-vascular plant (1) - Sporophyte (1) -~ Community ~
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