Biology: Biodiversity and Evolution Quiz

What is the primary criterion for defining a species?

• Ability to produce fertile offspring

• Sharing the same habitat

• Being part of the same food chain

• Having similar physical characteristics

Which of the following is NOT a domain in the classification system?

• Eukarya

• Bacteria

• Archaea

• Protista

Approximately what percentage of species that ever lived are now extinct?

• 50%

• 75%

• 99%

• 25%

What percentage of the mass of living things on Earth do humans make up?

• 10%

• 0.1%

• 1%

• 0.01%

What is an adaptation?

• A trait that helps an organism survive and reproduce

• A change in the environment

• A type of food an organism eats

• A method of communication among species

What is the process called when a new species forms due to isolation?

• Hybridization

• Mutation

• Speciation

• Migration

Which of the following is an example of an adaptation?

• A tree's height

• A fish's scales

• A bird's song

• A giraffe's long neck

How do fossils help us understand evolution?

• They predict future species

• They provide evidence of past life forms

• They show the current population of species

• They show the diet of ancient humans

What is the closest living relative to the giraffe?

• Okapi

• Elephant

• Horse

• Camel

What is the term for the gradual change of populations over time?

• Extinction

• Migration

• Evolution

• Adaptation