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Unformatted text preview: binary fission. The ciliate stops moving (1) and both mega- and micronucleus divide and move to opposite ends of the organism (2). The cytoplasm then divides at right angles to the long axis (3) and the daughter paramecia separate (4). Binary fission may take place 2 or 3 times each day. There is also a complex sexual process in which two paramecia join by their oral surfaces. The meganucleus breaks down and the micronucleus divides. One of the micronuclei of each individual crosses to the partner and fuses with the remaining micronucleus there. The partners then separate and reproduce by binary fission. food particles drawn into oral groove by ciliary current food ingested into a food vacuole undigested remains expelled circuit followed by food vacuoles slow movement Paramecium feeding 1 2 3 4 Binary fission D.G. Mackean...
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This note was uploaded on 11/29/2011 for the course BIO 218 taught by Professor Young during the Fall '11 term at BYU.
- Fall '11