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Composed of filaments or plates of cells, a thallus ranges in size from a single-celled structure to a complex treelike form. The photosynthetic and supportive cells tend to be organized linearly, but a thallus lacks such differentiated specialized structures as stem, leaves, and conducting tissue.
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www.answers.com/topic/thallus
www.answers.com/topic/thallus
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The photosynthetic and respiratory activities of equal areas (1.77 cm.') of vegetative and fruiting portions of Ulva thallus which were observed mano- ...
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www.biolbull.org/cgi/reprint/105/1/103.pdf
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The Kappaphycus rhythm seems therefore to be independent of the cell cycle, at least in the older portions of the thallus, (3) During real (L : D cycle) or subjective (LL) dark phases, net photosynthetic capacity (Pmax) dropped drastically in young (tip) parts of the thallus, and , the 'light affinity'
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api.ingentaconnect.com/content/tandf/tejp/2004/00000039...
api.ingentaconnect.com/content/tandf/tejp/2004/00000039/00000004/art00007
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As all of the major drainages for inland portions of the island are to the east of our sampling sites (Bryer &; ... 1991). It also has an openly branched and upright thallus that is heavily calcified and extends up into the water column. At each of the 18 stations we collected algal samples at 3 sites to test for within...
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www.int-res.com/articles/meps/220/m220p137.pdf
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Most of the photosynthetic organisms found in the ocean belong to a group of organisms classified by biologists as Protistans. ... The blades are the leaf-like flattened portions of the thallus, and the stipe is the stemp-like sstructure that provides support. The pneumatocysts are gas-filled bladders present on some...
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dtc.pima.edu/~nschmidt/gallery/algae/algae_index.html
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6. The three types of macroalgae (red, green, and brown) are distinguished by a. the shape of the holdfast b. the types of photosynthetic pigments in their cells c. their color d. the depth of water in which they grow e. whether they are ... 4. c, the blades are the leaf-like flattened portions of the thallus.
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dtc.pima.edu/~nschmidt/gallery/algae/algae_quiz.html
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The green algae and the true plants share many common features: both are photosynthetic, ... For example, thin portions penetrate the substrate, thicker portions lie on the surface, and erect portions of the thallus project about the mass and bear reproductive structures. This could easily lead to a division of labour among...
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kentsimmons.uwinnipeg.ca/16cm05/16lab05/lb1pg6.htm
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Older basal portions of the thallus progressively die and decompose. The decomposing thallus of the genus Sphagnum can in some instances be several meters thick forming an organic soil material termed peat moss.
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www.umanitoba.ca/faculties/science/biological_sciences/...
www.umanitoba.ca/faculties/science/biological_sciences/lab7/biolab7_2.html
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lichens produced numerous stunted branches on fully-elongated portions of the thallus which usually do not initiate new growth (Fig. 2~. These short branches dichotomize repeatedly and rapidly produce sexual structures (Fig.
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books.nap.edu/books/0309040787/html/205.html
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