In fact, some biologists consider the ciliates to be acellular (not cellular) rather than unicellular in order to emphasize that their "body" is far more elaborate in its organization than any cell out of which multicellular organisms are made.
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All of this rightly suggests that although they are unicellular, there is nothing rudimentary about the ciliates. ... Occasionally they reproduce explosively, creating poisonous red tides that may cause extensive kills of marine fish and make filter-feeding marine animals like clams unfit for human consumption.
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Ciliate - Wikipedia, the free encyclopedia
The ciliates are a group of protists characterized by the presence of hair-like organelles called cilia, which are identical in structure to flagella but typically shorter and present in much larger...
en.wikipedia.org/wiki/Ciliate
Ciliates reproduce asexually by division: the micronucleus undergoes mitosis, while in most ciliates the macronucleus simply pinches apart into two. This process is shown in the drawing above. However, ciliates also reproduce sexually, through a process known as conjugation.
www.ucmp.berkeley.edu/protista/ciliata/ciliatalh.html www.ucmp.berkeley.edu/protista/ciliata/ciliatalh.html
Micscape Magazine for enthusiast microscopy ... Some ciliates are very small, not much larger than the largest bacteria. Others like the 'trumpet animalcule' Stentor can reach a size of two millimetres so it can be seen with the naked eye. Paramecium does not become much larger than 0.3 mm.
www.microscopy-uk.org.uk/mag/wimsmall/cilidr.html
Most ciliates reproduce by transverse binary fission dividing along the shorter width of the cell, although stalked ciliates that attach to a substrate usually reproduce by budding. Ciliates are among the most complex of the eukaryotic single celled microorganisms.
web.deu.edu.tr/atiksu/ana58/ciliates.html web.deu.edu.tr/atiksu/ana58/ciliates.html
They are grouped with the ciliates on account of having a ciliated larval stage, ... They reproduce in some cases by binary fission, but more often by a process of budding in which ciliated motile larvae are formed either from the upper surface of the adult organism, or from a kind of brood chamber within the body of the cell.
www.micrographia.com/specbiol/protis/cili/suct0100.htm
Free-swimming ciliates reproduce by conjugation. Each cell has a large macronucleus and a smaller micronucleus. Conjugation is a form of sexual reproduction in which the individual cells fuse together and swap nuclear DNA in the form of small micronuclei.
water.me.vccs.edu/courses/ENV108/lesson6_5.htm
They are now identified in four groups zooflagellates, sarcodines, ciliates and sporozoans. ... Ciliates reproduce asexually by binary fission. Sexual reproduction is common. It occurs by a process called conjugation which involves exchange of genetic material between two individuals.
www.tutorvista.com/content/biology/biology-iii/kingdoms... www.tutorvista.com/content/biology/biology-iii/kingdoms-living-world/protozoan-protists.php
Ciliates reproduce sexually through conjugation which involves the exchange of haploid nuclei between two joined protists. Once the genetic information is exchanged each of the ex-conjugants clones itself.
www.eoearth.org/article/Protozoa
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