Plant body of algae, fungi (see fungus), and similar simple, plantlike organisms. 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. Most thallus plants are currently classified as complex protists.
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An organism or structure resembling a thallus is called thalloid, thallodal, thalliform, thalline, or thallose.
Even though thalli do not have organized and distinct parts (leaves, roots, and stems) as do the vascular plants, they may have analogous structures that resemble their vascular "equivalents". The analogous structures have similar function or macroscopic structure, but different microscopic structure; for example, no thallus has vascular tissue.
Although a thallus is largely undifferentiated in terms of its anatomy, there can be visible differences and functional differences. A kelp, for example, may have its thallus divided into three regions. The parts of a kelp thallus include the holdfast (anchor), stipe (supports the blades) and the blades (for photosynthesis).
Nutrient intake, acid base status and growth performance of Thalli lambs fed varying level of dietary cation-anion difference.(Report)
Nov 01, 2007; ABSTRACT : Influence of -110, +110, +220 and +330 mEq/kg of dry matter (DM) dietary cation-anion difference (DCAD) on growth...
WIPO PUBLISHES PATENT OF INDUSTRY-ACADEMY COOPERATION CORPS. OF SUNCHON NATIONAL UNIVERSITY FOR "METHOD FOR MASS-PRODUCING LICHEN THALLI, METHOD FOR RESTORING ECOLOGY USING THALLI PRODUCED THEREBY AND COMPOSITION FOR RESTORING ECOLOGY" (SOUTH KOREAN INVENTORS)
Jan 24, 2012; GENEVA, Jan. 24 -- Publication No. WO/2012/008634 was published on Jan. 19. Title of the invention: "METHOD FOR MASS-PRODUCING...