Unit 7 Classification (5.3&5.4)

Below is a phylogenetic tree of the three domains. There are important differences between the three domains. Which of these domains have organelles?

• Eubacteria and archaea

• Archaea only

• Eukaryotes and archaea

• Eukaryotes only

The scientific name of the Wakatobi flowerpecker is Dicaeum kuehni. Which species is most closely related?

• Amerila kuehni

• Wakatobi white-eye

• Kuehneon duchyense

• Dicaeum celebicum

The images show a guinea pig, a mouse, a horse and a whale. Which features support the classification of these four species in the same class?

• All are warm-blooded and breathe air.

• All have evolved from primates.

• All have hair or fur and feed their young with milk.

• All have a notochord, vertebrae and give birth to live young.

Which organism is a member of the filicinophyta? (Note that these are not to scale)

• A

• B

• C

• D

The image shows an organism belonging to the Kingdom Animalia. What feature does this organism have in common with all members of the phylum chordata?

• Legs and wings

• Mouth but no anus

• Bilateral symmetry

• Chitinous exoskeleton

Which is the hierarchy of taxa in order of increasing numbers of species?

• genus, family, order, class

• class, order, genus, family

• genus, family, class, order

• class, order, family, genus

The cladogram shows the relationships of five species I to V. Which species is/are most closely related to IV?

• V only

• II and III

• III and V

• II, III and V

The chart shows features of three organisms X, Y and Z. To which domain does each organism belong?

• X=Animalia, Y=Eukaryote, Z=Prokaryote

• X=Eukaryote, Y=Eubacteria (Bacteria), Z=Archaea

• X=Eubacteria (Bacteria), Y=Archaea, Z=Plantae

• X=Eukaryote, Y=Archaea, Z=Eubacteria (Bacteria)

The cladogram was constructed using DNA base sequences from six species. Which node indicates the greatest difference in base sequences?

• A

• B

• C

• D

Which of the organisms A–D, identified by the key, represents a reptile?

• A

• B

• C

• D