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Cutaneous respiration, or cutaneous gas exchange (sometimes called skin breathing), [1] is a form of respiration in which gas exchange occurs across the skin or outer integument of an organism rather than gills or lungs. Cutaneous respiration may be the sole method of gas exchange, or may accompany other forms, such as ventilation.
The life cycle usually involves asexual reproduction by means of mitosis, either through desmoschisis or eleuteroschisis. More complex life cycles occur, more particularly with parasitic dinoflagellates. Sexual reproduction also occurs, [92] though this mode of reproduction is only known in a small percentage of dinoflagellates. [93]
Spirogyra (common names include water silk, mermaid's tresses, and blanket weed) is a genus of filamentous charophyte green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is characteristic of the genus. Spirogyra species, of which there are more than 500, are commonly found in freshwater ...
Algae exhibit a wide range of reproductive strategies, from simple asexual cell division to complex forms of sexual reproduction via spores. [7] Algae lack the various structures that characterize plants (which evolved from freshwater green algae), such as the phyllids (leaf-like structures) and rhizoids of bryophytes (non-vascular plants), and ...
Algae can reproduce asexually, sexually, and vegetatively. [2] Vegetative methods of algal reproduction include sinple cell division, fission, fragmentation , splitting of colonial forms, hormogonia , vegetative bodies, formation of adventitious branches, tubers, and budding.
Algae exhibit a wide range of reproductive strategies, from simple asexual cell division to complex forms of sexual reproduction via spores. Algae lack the various structures that characterize plants (which evolved from freshwater green algae), such as the phyllids (leaf-like structures) and rhizoids of bryophytes (non-vascular plants), and the ...
Residents are complaining about burning eyes and breathing problems. Dead fish have washed up on beaches. Florida's southwest coast experienced a flare-up of the toxic red tide algae this week ...
The name "cyanobacteria" (from Ancient Greek κύανος (kúanos) 'blue') refers to their bluish green color, [8] [9] which forms the basis of cyanobacteria's informal common name, blue-green algae, [10] [11] [12] although as prokaryotes they are not scientifically classified as algae.