Leptosporangiate fern - Wikipedia, the free encyclopedia
Leptosporangiate ferns are vascular spore plants, whose sporangia arose from a single epidermal cell and not from a group of cells as in eusporangiate ferns. The sporangia are typically covered with ...
en.wikipedia.org/wiki/Leptosporangiate_fern
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SPORE-BEARING PLANTS ... The most common spore-bearing plants presently are the ferns (Pteridophyta), which come in a variety of forms. The pictures below show some of the modern types. Ferns, like lycopsids and horsetails, much more often reached tree-size dimensions in the late Paleozoic.
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itc.gsw.edu/faculty/bcarter/histgeol/paleo/plants.htm
itc.gsw.edu/faculty/bcarter/histgeol/paleo/plants.htm
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Fungi, mosses, lichens, and ferns are among the plants that produce spores rather than seeds as their vehicles of reproduction.
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botany.suite101.com/article.cfm/seeds_versus_spores
botany.suite101.com/article.cfm/seeds_versus_spores
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The General Body Structure of Vascular Spore Plants ... Specific Body Form of the Various Types of Vascular Spore Plants ... Plants may be informally grouped into three categories based on structure and mode of reproduction: nonvascular spore plants which are simple in structure (no vascular system) and reproduce by spores,
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botany.suite101.com/article.cfm/structure_and_reproduct...
botany.suite101.com/article.cfm/structure_and_reproduction_of_ferns_and_others
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Laboratory 5. Spore Plants ... This lab will emphasize the evolution of terrestrial plants beginning with spore plants. You will learn to identify and describe the different stages of spore plant life cycles, identify various species of spore plants, and differentiate among the six divisions of spore plants.
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www4.nau.edu/biology/bio182/spore_plants.htm
www4.nau.edu/biology/bio182/spore_plants.htm
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A new series of definitives of Aland, picturing spore-plants, will be issued in January as a continuation of last year's stamps with lichen. In 2001 they depict swamp horsetail, stiff club-moss and polypody. ... Spore-plants as new definitives...
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www.filahome-stamps.com/stamps/0101sporeplants.htm
www.filahome-stamps.com/stamps/0101sporeplants.htm
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Allogamy is not restricted to flowering plants alone. Among spore plants, a type of allogamy using male gametes instead of pollen is common. ... Many spore and flowering plants are monoecious. Male and female gametes develop either on different parts of the parental plant or at different times. Fern prothalliums and...
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www.biologie.uni-hamburg.de/b-online/e38/38d.htm
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Kramer, K.U. & Green, P.S. 1990. Pteridophytes and Gymnosperms. In Kubitzki, K. (ed.), The families and genera of vascular plants. Springer-Verlag, Berlin.
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www.opleidingen.ugent.be/studiegids/2007/EN/FACULTY/WE/...
www.opleidingen.ugent.be/studiegids/2007/EN/FACULTY/WE/COURSE/CHBIOL/00000011/INDEX.HTM
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Plants form the framework of the physical environment in which land animals live. In fact, ... The zygote growing from the archegonium, develops into a new diploid sporophyte. Sporophytes generally differ from gametophytes in possessing tall stems. Why? Presumably to elevate the sporangia for better spore dispersal.
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www.geol.umd.edu/~tholtz/G331/lectures/331plant.html
www.geol.umd.edu/~tholtz/G331/lectures/331plant.html
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