Eubacteria: Most organisms in this kingdom are unicellular bacteria. Certain Euglena species (e.g. These protozoa are very parasitic, causing malaria in both birds and mammals. Host mosquitos already infected with malaria are responsible for injecting sporozoans into the bloodstream, causing malarial infection. They, being the photosynthetic group, harvest a huge amount of the oxygen on Planet. B. Unicellular organisms use photosynthesis to make food, but multicellular ones do not. Unicellular forms are common in all the groups of algae except Rhodophyceae, Phaeophyceae and Charophyceae. These blooms are so large and last so long that they actually provide most of the oxygen present on Earth. [12], The photosynthetic cyanobacteria are arguably the most successful bacteria, and changed the early atmosphere of the earth by oxygenating it. a. When letters make sounds that aren't associated w One goose, two geese. If the number of division of protoplast is more, more number of zoospores are formed and, on germination, they develop new plants, weaker than the plants developed by macrozoospores. They differ from bacterial antibiotics in structure, so they will be able to treat patients differently than the antibiotics typically prescribed now. In this branching system the whole thallus remain attached to the substratum by a basal cell and the branches may arise from any cell of the filament except the basal cell, e.g., Cladophora (Fig. Other organisms in the division are Volvox and Spirogyra. C. Prokaryotes and Eukaryotes. The broken ends emerge out of the mucilaginous sheath in the form of a branch. In this type the number, shape and size of the cell is variable. The smaller one is called micro- gamete which behaves as male and the larger one is called macrogamete which behaves as female. These organisms have chlorophyll and carotenoid pigments for photosynthesis and flagella for movement. The trichomes of blue greens may break either due to death or decay of the intercalary cells. In this branching system the whole thallus is differentiated into prostrate and erect system. Divisions of Unicellular Algae, Next Within the extensive classification of organisms, algae constitute, without a doubt, one of the most curious and surprising groups. Various Algal species are Saprobes, and few are Parasites in nature. Their photosynthetic pigments are chlorophyll a, chlorophyll c, -carotene, and fucoxanthine. Algae: Definition, Characteristics and Structure (With Diagram)
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