c) parasitism. Paramecia cells are ringed with tiny, hair-like projections called cilia . When placed in the same habitat, Paramecium aurelia will replace Paramecium caudatum. These plants produce nectar, and the bees transport pollen from one plant to another while searching for nectar. d) competitive exclusion. Their natural habitat is fresh water. The “Aurelia” group are defined by the relatively long bodies with a pointed end. Paramecium has a worldwide distribution and is a free-living organism. It usually lives in the stagnant water of pools, lakes, ditches, ponds, freshwater and slow flowing water that is rich in decaying organic matter. 6. Explain the differences in the population growth patterns of the two Paramecium species. 1. 8. -Where do they stay... What do they eat? Describe what happened when the Paramecium populations were mixed in the same test tube. What does this tell you about how Paramecium aurelia uses available resources? Do the results support the principle of competitive exclusion? When grown individually in the laboratory, they both thrive. All About - Paramecium Aurelia :) Habitat? ; It is a aquatic animal found In freshwater pools like ponds, ditches, drains, tanks & rivers. Paramecium eat bacteria, yeast, and algae through phagocytosis. But when they are placed together in the same test tube (habitat), P. aurelia outcompetes P. caudatum for food, leading to the latter’s eventual extinction. This is an example of: competitive exclusion. Paramecium species can be divided into two main groups, primarily by body shape, but also genetically and biochemically. They take in water from the hypotonic environment via osmosis and use bladder-like contractile vacuoles to accumulate excess water from radial canals and periodically expel it through the plasma membrane by contractions of the… 7. Paramecium species are found in both fresh and salt water, and some can live in moist soil or even in other organisms. Paramecium lives on small micro-organisms like bacteria, diatoms, small algae and other protozoa. b) commensalism. ; All the genus of paramecium shows holozoic nutrition. Habit & Habitat. Paramecium aurelia and Paramecium caudatum grow well individually, but when they compete for the same resources, the P. aurelia outcompetes the P. caudatum. An example of this principle is shown in Figure 7, with two protozoan species, Paramecium aurelia and Paramecium caudatum. Paramecium caudatum feed on bacteria by driving them into the biosphereic presser valve with cilia. Many plant species produce flowers of a certain color and shape to attract honeybees. Habit and Habitat. The Paramecium Aurelia is heterotroph This means that they are an organism which derives its nutritional necessities from organic substances. 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