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Euglena gracilis. A morphological and molecular study of the Euglenozoa put E. gracilis in close kinship with the species Khawkinea quartana, with Peranema trichophorum basal to both, [4] although a later molecular analysis showed that E. gracilis was more closely related to Astasia longa than to certain other species recognized as Euglena.
Twenty-two years later, John Harris published a brief series of "Microscopical Observations" reporting that he had examined "a small Drop of the Green Surface of some Puddle-Water" and found it to be "altogether composed of Animals of several Shapes and Magnitudes." Among them, were "oval creatures whose middle part was of a Grass Green, but ...
This varies from rigid to flexible, and gives the cell its shape, often giving it distinctive striations. In many euglenids, the strips can slide past one another, causing an inching motion called metaboly. Otherwise, they move using their flagella.
The larvae of the polar sea urchin Sterechinus neumayeri have been found to use energy in metabolic processes twenty-five times more efficiently than do most other organisms. [46] Despite their presence in nearly all the marine ecosystems, most species are found on temperate and tropical coasts, between the surface and some tens of meters deep ...
The shapes, colors and fragrances of orchids are the result of their coevolution with pollinators.Pictured is a flower Coryanthes leucocorys, species that has evolved one of the most fascinating mechanisms of attracting pollinators by means of a liquid-filled pouch.
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Dogs are great communicators. No, our pups can’t use language in the same way as humans, but we can read a lot from their body language and the sounds they make.. And over the last few years ...
Paramecium (/ ˌ p ær ə ˈ m iː s (i) ə m / PARR-ə-MEE-s(ee-)əm, /-s i ə m /-see-əm, plural "paramecia" only when used as a vernacular name) [2] is a genus of eukaryotic, unicellular ciliates, widespread in freshwater, brackish, and marine environments.