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Phycologists consider seaweed to refer any of a large number of marine benthic algae that are multicellular, macro thallic (large-bodied), and thus differentiated from most algae that tend towards microscopic size (Smith, 1944). Seaweeds are found among the green, red, and brown algae. Some cyanobacteria may also be counted as seaweeds. Seaweeds are named after terrestrial " weeds", and are not to be confused with things like seagrass which are vascular plants and not algae.1 Structure
Seaweeds may have an appearance that resembles non- arboreal terrestrial plants.
- thallus: the algal body
- blade: a flattened structure that is somewhat leaf-like
- sorus : sporeThe term spore has several different meanings in biology. Spores are: diaspores (dispersal units) of fungi, mosses, ferns, fern allies, and a few other plants; The gametes of the higher vascular plants ( angiosperms and gymnosperms)—the microspores ( poll cluster
- on Fucus -- Air bladderA bladder is a pouch or other flexible enclosure with waterproof or gasproof walls. In the context of animals and anatomy, "bladder" usually refers to the urinary bladder. The term is generic and can also be used for other enclosures, such as the gallblads: floatThere are several meanings of float Buoyancy Float (project management) Floating point, short for number Floats are used by seaplanes to land on water. Insurance (investable policyholder funds).-assist organ (on blade)
- on kelpKelp are large seaweeds, belonging to the brown algae and classified in the order Laminariales. There are about 30 different genera; sometimes members of the order Fucales are also considered kelp. Kelp grows in underwater forests (kelp forests) in clear, -- floatThere are several meanings of float Buoyancy Float (project management) Floating point, short for number Floats are used by seaplanes to land on water. Insurance (investable policyholder funds).s: float-assist organ (in between blade and stipe)
- stipeIn botany, a stipe is a stem type of structure. It may be a stemlike structure, as of a seaweed, or a true leaf stem, as of a fern. In the case of the fern, the stipe is only the stem from the rootstock to the beginning of the leaf tissue, or lamina.: a stem-like structure
- holdfastA holdfast is a rootlike plant structure that anchors a seaweed.: specialized basal structure providing attachment to the bottom
2 Uses
3 References
- Smith, G.M. 1944. Marine Algae of the Monterey Peninsula, California. Stanford Univ., 2nd Edition.
4 External link
- The Seaweed Site, information on all aspects of seaweeds and marine algal biology
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