Examples: Porphyra, Gracilaria, and Gelidium. In this article the algae are defined as eukaryotic (nucleus-bearing) organisms that photosynthesize but lack the specialized multicellular reproductive structures of plants, which always contain fertile gamete-producing cells surrounded by sterile cells.Algae also lack true roots, stems, and leaves—features they share with the avascular lower plants (e.g., mosses, liverworts, and hornworts). They are the food base of ecosystems called kelp … Brown Algae (Phaeophyta) -Have fucoxanthin for pigment -1500 known species, almost all marine -most complex and largest -Kelps are largest group -Can grow up to 2 feet in one day! example: Seaweed; includes three forms: unicellular, colonial, and multicellular; live in all environments: fresh/salt water and soil; unicellular. live in long filaments or as colonial spheres; example: gonium; Multicellular. The algae are autotrophic protists that can be unicellular or multicellular. These algae come in three forms: unicellular, colonial, or multicellular. from unicellular, to colonial, to multicellular forms. Fungi. Plantae. They carry out probably 50% to 60% of all the photosynthesis on the earth. Examples: Mushroom, Mold, Puffball. very common in fresh water as part of phytoplankton; example: chlamydomonas sp. Algae may be unicellular or multicellular based on their type, and they reproduce either sexually or asexually. These organisms are found in the supergroups Chromalveolata (dinoflagellates, diatoms, golden algae, and brown algae) and Archaeplastida (red algae and green algae). The algae are autotrophic protists that can be unicellular or multicellular. Types of Seaweed 2. Captcha proves you are algae examples of the term algae lack many unicellular, either be ornamented with the water? More than 4,000 species of green algae exist on the planet. Examples: Algae, slime moulds and the malaria causing Plasmodium. Multicellular Algae: The Seaweeds and ... dead man’s fingers are examples B. Sporophytic plant bodies of classes algae can form multicellular organism such as any and as phycologists. Algae play significant roles as producers in aquatic ecosystems.Microscopic forms live suspended in the water column. They are the main component of phytoplankton.As such, they contribute to the food base of most marine ecosystems.. Multicellular seaweeds called kelp may grow as large as trees. Brown Algae. Algae are the basically gigantic, miscellaneous assemblage of Photosynthetic eukaryotic organisms. Classification. Algae belong to a paraphyletic group that is distinguished from the other groups of organisms by being aquatic, photosynthetic, eukaryotic organisms. Algae Definition. Ecology of Algae. Green algae can be found in marine or freshwater habitats, and some even thrive in moist soils. On the other hand, the sex organs of the plants are multicellular and zygote grows to form multicellular embryo. The rhodophyta. Functioning of algae examples of plant body is it is characterized by providing a primary source of the different. Some examples of the phaeophytes are the laminaria and the fucus. Sea lettuce (Ulva lactuca) is a type of green algae … They are used as a stabilizer in milk products. Red algae contain pigments like chlorophyll a, chlorophyll d, carotenoids, xanthophylls, and phycobilins. Eukaryotic (Multicellular) The members of this kingdom don't possess photosynthetic pigments and are therefore heterotrophic. The sex organs in algae are unicellular the zygote is not protected by parent body. These organisms are found in the supergroups Chromalveolata (dinoflagellates, diatoms, golden algae, and brown algae) and Archaeplastida (red algae and green algae). Most of the algae are multicellular and marine algae (seaweeds). Generally, algae possess chlorophyll but lack true roots, stems and leaves characteristic of the embryophytes. The algae are classified into phyla based on their type of chlorophyll, the form of food-storage, the color of the algae and the cell wall composition. Eukaryotic (Multicellular) Algae (singular alga) are photosynthetic protists. Colonial. They might be the unicellular cell, multicellular or may even live in the colonial form. -Have been recorded at over 330 feet long! They include a wide range of organisms, i.e. About 5% of the red algae inhabit in freshwater environments. Gonium ; multicellular pigments and are therefore heterotrophic this kingdom do n't possess photosynthetic pigments and are heterotrophic. Multicellular embryo 50 % to 60 % of the term algae lack many unicellular to! The term algae lack many unicellular, either be ornamented with the water organisms being... 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