Like other Protozoa the Radiolaria are unicellular organisms, the whole fully developed organisation of which falls under the category of a single cell, both morphologically and physiologically.
Adam is immortal quite as much as unicellular organisms, for he survives in his successors.
Unicellular organisms (he would have it) do not undergo natural death, but, since they are able to reproduce themselves continuously by a process of simple division, are immortal.
Now, if life be thus immortal in the case of unicellular organisms, why should it have ceased to be so in the case of multicellular?
Thus far, then, the phenomena of multiplication are identical in all the lowest or unicellular organisms, and in the constituent cells of all the higher or multicellular.
Unicellular organisms, such as Rhizopoda and Infusoria, increase by means of fission.
Hence we must speak of the eternal duration of unicellular organisms and of reproductive cells in the Metazoa and Metaphyta in that particular sense which signifies, when measured by our standards, an immensely long time.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "unicellular organisms" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
