Classification Systems

To group them based on shared characteristics

To determine their exact age

To name them with a single, unique word

To record where they live on Earth

The genus is the first part of the name, and the species is the second.

The species is a broader category than the genus.

An organism has a genus name or a species name, but not both.

The genus and species names are developed by different scientists.

They belong to the same species because they have shared traits.

They belong to different species because they cannot produce fertile offspring.

They must belong to the same genus because they look similar.

They cannot be classified because they have conflicting traits.

To classify organisms into different levels from broad to specific.

To study how different organisms get their energy.

To give every living thing a unique, single name.

To separate all organisms into the three domains.

The two organisms in the same family are more closely related.

The two organisms in the same class are more closely related.

Both pairs of organisms are equally related to each other.

Neither pair of organisms is related in any way.

It belongs to the Domain Eukarya because it has a nucleus.

It belongs to the Domain Bacteria because it is a single organism.

It belongs to the Domain Archaea because it is microscopic.

It cannot be classified without knowing its Kingdom.

The process where well-adapted individuals are more likely to survive and reproduce.

The way scientists name different living organisms.

The idea that all living things have never changed.

The study of animals and plants from the distant past.

It led them to classify organisms based on how recently they shared a common ancestor.

It made them classify organisms only by their physical appearance.

It stopped them from discovering any new species.

It proved that Charles Darwin discovered all living things.

The two species likely share a recent common ancestor.

The two species must live in the exact same environment.

One species is definitely a predator of the other species.

The two species are completely unrelated.

They prove the organisms live in the same habitat.

They show that the organisms eat the same type of food.

They provide evidence of a close evolutionary relationship.

They indicate that the organisms are identical to each other.

They have identical DNA.

They live in the same location.

They likely evolved from a common ancestor.

They are the same species.

The organism is a direct descendant of a modern horse.

The organism likely shares a common ancestor with horses and zebras.

The organism must have lived in the same environment as zebras.

The organism will eventually evolve into a horse or a zebra.

It provides evidence for the history of life and how organisms have changed.

It contains a complete record of every animal that has ever lived.

It explains how to create new types of animals in a lab.

It shows the exact location of all modern animals on a map.

By comparing features of fossils to those of modern species.

By only studying the fossils of animals that are now extinct.

By arranging all fossils in order from smallest to largest.

By assuming all ancient animals looked exactly like modern animals.

The species may share a common ancestor with modern crocodiles.

The ancient animal is identical to a modern crocodile.

All ancient animals eventually evolved into crocodiles.

The fossil is not useful for understanding evolution.

To help identify an unknown organism.

To name a newly discovered organism.

To group organisms by their diet.

To study how organisms behave.

By showing a picture of the organism.

By describing the organism's habitat.

By presenting choices about its observable traits.

By listing the organism's family tree.

The key can only be used to identify animals, not other organisms.

The key uses specific physical features to narrow down the options.

The key always starts by asking about an animal's covering.

The key is most useful for identifying common animals like those with fur.

When unrelated organisms develop similar features to adapt to similar environments.

When related organisms develop different features from each other.

When organisms have similar structures because they have a common ancestor.

When an organism's internal structure is identical to its ancestor's.

The similarity of their internal structures.

The environment in which they live.

The ability of both organisms to fly.

The external appearance of their wings.

They show convergent evolution, as they are unrelated but adapted to a similar swimming lifestyle.

They must share a common ancestor because their body shapes are so similar.

Their similar features prove they are closely related, despite being a mammal and a fish.

It is impossible to draw a conclusion without knowing their bone structure.