A mammalian cell typically contains 40 to 100 stacks. citation Between four and eight cisternae are usually present in a stack; however, in some protists as many as sixty cisternae have been observed. Source: Internet
However, as a legacy of the older plant life scheme, some groups that were also treated as protozoans in the past still have duplicated classifications (see ambiregnal protists ). Source: Internet
Many protists and fungi alternate between sexual and asexual reproduction. Source: Internet
In lower termites, the endosymbiotic protists play a major role in the digestion of lignocellulosic materials that constitute a bulk of the termites' diet. Source: Internet
Exceptions are animals and some protists, who undergo meiosis immediately followed by fertilization. Source: Internet
Fertilisation in protists Fertilisation in protozoa There are three types of fertilisation processes in protozoa: Fertilization in protozoa and metazoan animals: cellular and molecular aspects. Source: Internet