Paramecium bursaria and its symbiotic relationship with the green alga called Zoochlorella. - HD 映像素材

The algae live inside the Paramecium in its cytoplasm and provide it with food, while the Paramecium provides the alga with movement and protection. Paramecium bursaria has a wide oral groove, two contractile vacuoles, and a single micronucleus as well as a single macronucleus. It is the only species of Paramecium that forms symbiotic relationships with algae, and it is often used in biology classrooms both as an example of a protozoan and as an example of symbiosis