Why is it difficult to classify protists? Check all that apply.

There are many varying characteristics and exceptions to each type of protist.
They have been previously categorized based on what they are not.
They are all eukaryotes composed of one or more cells that contain nuclei.
There are no exceptions to the characteristics of each type of protist.
They are microscopic and therefore too small to study accurately.
Recent studies show that protists have not descended from one common ancestor.

Scientists used to lump protists into a single kingdom, and they still use this classification for some purposes. However, science has largely recognized that the taxonomic grouping known as Kingdom Protista actually includes a wide range of organisms that are not particularly related.

topeadeniran2 topeadeniran2 · Answer 2 · 2021-10-19T20:01:18+02:00

It is difficult to classify protists due to the following reasons:

There are many varying characteristics and exceptions to each type of protist.
They have been previously categorized based on what they are not.
Recent studies show that protists have not descended from one common ancestor.

It should be noted that protists are difficult to characterize due to the fact there's diversity of the kingdom. Protists vary in body form, reproduction, and nutrition. Also, they can be unicellular, multicellular, or colonial.

Protists can also be free-living or living symbiotically. There were also studies that showed that protists have not descended from one common ancestor and this brought about their differences.

Therefore, the reasons given above have led to difficulties in their classifications.

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