LSF Ch. 6 Test Prep

The name Homo sapiens means ___________.

______________ lived in family groups in caves and hunted with well-made stone tools.

_____________ structures indicate that two or more species might share common ancestors.

Rapid evolution resulting in a new species is __________.

An adaptation is any variation that makes an organism better suited to its environment.

In undisturbed areas, older rock layers lie ___________ successively younger rock layers.

Humans, monkeys, lemurs, tarsiers and apes are all ____________.

_____________ believed that traits developed during a parent's lifetime, like big muscles, are passed on to offspring.

A group of organisms that share similar characteristics and can reproduce among themselves is called a ___________.

Scientists estimate ages of rocks using radioactive elements.

Geographic isolation contributes to evolution.

A change in the inherited characteristics of an organism over time is called ____________.

Organisms produce more offspring than can survive.

A fossil characterized by a small brain cavity but humanlike jaw and teeth is ___________.

__________ permits you to judge depth or distance with your eyes.

Primates are divided into two groups, strepsirhines and tarsiers.

______________ have an opposable thumb that allows them to grasp and hold objects.

Homo sapiens are early ________.

__________________ is known as the "handy man" because of the simple stone tools found near the fossil.

Evolution as a slow change of one species to another is called ___________.

____________ had short, heavy bodies with thick bones.

____________ all share three characteristics, opposable thumbs, binocular vision, and flexible shoulders.

An organism can blend into its environment using camouflage.

A trip to the Galapagos Islands prompted ______ to develop the theory of evolution by natural selection.

Natural selection is "survival of the ____________."

The fossil record provides evidence that living things have NOT evolved.

Cro-Magnon lived in art-decorated caves and buried their dead.

Scientists can tell whether organisms are closely related by comparing their ________.

A trait that makes an individual different from other members of its species is a ________.

Body parts with no apparent function are called ____________.

When sedimentary rock is disturbed by road construction or earthquakes, scientists can still rely on relative dating.

Old stone tools found in a cave are fossils.

Populations are made up of all the individuals of a ____________ living in the same area.

__________ is the study of the development of the embryos of organisms.

The earliest known hominid is __________.

Remains of life from an earlier time are called ____________.

______________ estimates age of fossils from sedimentary rock layers.

Telling the age of a fossil by the amount of change in a radioactive element is relative dating.

An adaptation that allows an organism to blend into its environment is ________.

Which characteristic separated hominids from apes?

A human-like primate that appeared about 4-6 million years ago, ate plants and meat, and walked upright on two legs is..

______________ occurs when one species suddenly changes to another.

Body parts that are similar in origin and structure are called ___________ structures.

Darwin's theory of evolution by natural selection emphasizes the ___________ among individuals of a species.

Scientists list ________ as a direct ancestor of modern humans; its physical features are most like humans today.

An example of an imprint fossil is _________.

Any variation that makes an organism better suited to its environment is called ___________.

A large brain is a characteristic of all primates.

Knowing the relative age of a rock can help scientists determine the relative age of a fossil.

Most fossils are found in _________ rock.