What Do the Multiple Branching Points at the Root of the Eukaryotic

question 66

Multiple Choice

What do the multiple branching points at the root of the eukaryotic phylogenetic tree indicate about the evolution of eukaryotes?

• A) that unikonts are derived from the SAR clade
• B) that Archaeplastids were the first eukaryotes
• C) that fungi are more closely related to plants than animals
• D) that eukaryotes are all descended from a common ancestor

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Definitions:

Facultative Bacteria

Bacteria that can switch between aerobic and anaerobic metabolism depending on oxygen availability.

Biochemical Reactions

Chemical processes occurring within living organisms to maintain life, including digestion, respiration, and synthesis of biomolecules.

Waxy Cell Wall

A characteristic feature of certain bacteria, signifying a thick outer layer composed of a complex lipid known as mycolic acid, providing resistance to some types of antibiotics and staining methods.

Aerobes

Bacteria that grow best in the presence of oxygen.