Understanding Phylogenetic Trees and Evolutionary Relationships

What is the primary purpose of a phylogenetic tree?

• To display the geographical distribution of species

• To list all extinct species

• To categorize species based on size

• To show the evolutionary relationships between species

In a phylogenetic tree, what do the nodes represent?

• The lifespan of a species

• Common ancestors of different species

• The geographical location of a species

• The extinction of a species

Which group does the common ancestor of frogs and pigs belong to?

• Echinodermata

• Arthropoda

• Cordata

• Mollusca

What is LUCA in the context of evolutionary biology?

• The first plant species

• The largest known dinosaur

• The last universal common ancestor

• The first multicellular organism

Which group includes multicellular organisms such as plants, animals, and fungi?

• Bacteria

• Archaea

• Eukarya

• Protista