Classification Based on Relatedness Quiz

What is phylogeny?

• The physical appearance of an organism
• The evolutionary history of a species
• The classification system for plants
• The genetic mutation of organisms

What is a derived characteristic?

• A trait that appears randomly in organisms
• A trait shared by all living things
• A significant shared trait resulting from common ancestry
• A trait that changes frequently

Why were analogous traits considered problematic for classification?

• They evolve independently
• They look identical
• They are always visible
• They change quickly

What makes keratinized hair a derived characteristic for mammals?

• All mammals have it
• It develops from similar tissues
• It is controlled by similar genes
• Both B and C

Before the microscope, how many types of organisms were scientists aware of?

• One
• Two
• Three
• Four

What is a cladogram used to represent?

• Genetic mutations
• Evolutionary relationships
• Physical similarities
• Cellular structures

Which of these are considered analogous traits?

• Mammal hair
• Bird and bat wings
• Whale and fish fins
• Mammal teeth

What does a taxon represent in classification?

• A specific organism
• A level of organization
• A genetic mutation
• A physical trait

Why did early classification systems become insufficient?

• Too many organisms existed
• Genetic understanding increased
• Microscopes were invented
• All of the above

What makes a trait useful in creating a cladogram?

• It looks similar
• It serves a common purpose
• It results from common ancestry
• It appears randomly