Chapter 21 vocabulary and Assessment

Eukaryotic organisms that are not animals, plants, or fungi are classified as

• Bacteria

• Protists

• Parasites

• Viruses

Why is the “protist” grouping problematic

• Many “protists” are more closely related to members of other groups than they areto other “protists”

• “Protists”can be classified easily as plants or animals

• “Protists”are the simplest and oldest forms of life

• “Protists” are not very diverse

Which of the following is not currently classified as a protist

• Brown algae

• Slime molds

• Euglena

• Yeast

Microscopic fossils of eukaryotes date back

• 1.5 billion years

• 1.5 million years

• 15,000

• No fossils of early eukaryotes have been found yet

Plants, animals, and fungi arose from the group of protists that exhibit

• Asexual reproduction

• Animal- like characteristics

• Multicellularity

• Unicellularity

What is a protist

• Protists are eukaryotes that are not members of the plant, animal, or fungi kingdoms

• Not Eukaryotes

Compare the updated classification of protists with the older one

• Protists are now divided into 6 major clades/groups

• no groups

Which kingdoms arose from protist ancestors

• Only the protist, animal, plan and fungi kingdoms

• not in the kingdoms

Why is it misguided to try to find our earliest eukaryotic ancestor among modern day protists?

• Modern day protists have gone through extensive evolution

• not gone through extensive evolution

What simplification does the figure make? How could this simplification be misinterpreted? Explain your answer using your knowledge from Chapter 18 of how cladograms are constructed

• This cladogram represents an understanding of protists relationships supported by current research.

• does not help the picture