Single-celled Organisms
Many species of single-celled organisms exhibit different morphological forms. Individual cells may even exhibit different morphologies during the course of their life cycle. In times of environmental stress, some bacteria form endospores which are distinct from their normal free-living state. Some amoeba may differentiate into different cell types upon conglomeration with other amoeba of the same species, as in Dictyostelium discoideum.
Read more about this topic: Cell Type
Famous quotes containing the word organisms:
“The white man regards the universe as a gigantic machine hurtling through time and space to its final destruction: individuals in it are but tiny organisms with private lives that lead to private deaths: personal power, success and fame are the absolute measures of values, the things to live for. This outlook on life divides the universe into a host of individual little entities which cannot help being in constant conflict thereby hastening the approach of the hour of their final destruction.”
—Policy statement, 1944, of the Youth League of the African National Congress. pt. 2, ch. 4, Fatima Meer, Higher than Hope (1988)