Question

___________is the smallest protist.

Answer 1

Smallest protist : Marine picoplankton

1. Protists are unicellular nucleated eukaryotic organisms that possess true nucleus and membrane bond cell organelles.
2. Marine picoplanktons are the smallest protist which are about 1 micrometer in diameter.
3. These organisms are so small (about 1 micrometer in diameter) that they are near the limit of resolution of ordinary light microscopes.
4. They consists of a single chloroplast and a single mitochondrion.
5. Ostreococcus tauri is one of the smallest marine picoplankton studied so far.

Final answer :- Marine picoplankton (Ostreococcus tauri ) is the smallest protist.