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23 Σεπ 2015 · Protozoa are a diverse group of unicellular eukaryotic organisms that are heterotrophic and lack chlorophyll. They range in size from 1-150 micrometers and can be naked or covered by a pellicle. Locomotion is via pseudopodia, cilia, or none.
27 Ιουν 2010 · The document then describes the major protozoan phyla - Sarcomastigophora, Apicomplexa, and Ciliophora - and examples within each, focusing on locomotion, structure, life cycles, and genetic control and reproduction.
24 Απρ 2021 · The document classifies protozoa into four main types - flagellates, ciliates, sarcodina, and sporozoates - and provides examples of diseases caused by pathogenic protozoan species, such as malaria, giardiasis, and toxoplasmosis. It also lists some common antiprotozoal drugs like chloroquine, mefloquine, and metronid.
A protozoan is a complete organism in which all of life activities are carried on within a single plasma membrane. Organelles specialized for the unicellular lifestyle carry out many protozoan functions.
22 Απρ 2024 · Dr. Salah Mahdi introduces the diverse world of protozoa, highlighting their classification, morphology, reproduction, and unique characteristics. Protozoa, being unicellular eukaryotic micro-organisms, exhibit a wide array of organelles and motion styles.
Parasitic protozoa may be found in association with most animal groups. Many protozoa survive dry conditions by the formation of a resistant cyst or dormant stage. Parasitic protozoa can modify their morphology and physiology to cope with a change in host.
38 Characteristics of Protozoan Phyla 1. They are unicellular with some colonial and multicellular stages. 2. Most are microscopic. 3. All symmetries are present within members of the group. 4. No germ layers are present. 5. No organs or tissues are formed, but specialized organelles serve many of these functions.
