Change Over Time

The Geologic Time Scale begins the formation of Earth approximately ___years ago.

• 4.6 thousand
• 4.6 million
• 46 million
• 4.6 billion

Which of the following statements are true about fossils?

• Fossils are usually found in sedimentary rock layers
• There are many different ways that fossils can be formed
• Fossil insects that were trapped in ice or hardened into amber
• all of these

Which of the following fossils are not found in sedimentary rock?

• imprints
• frozen mammoths
• amber
• petrified wood

Which fact is the basis for using the fossil record as evidence that evolution has taken place?

• In undisturbed layers of rock strata, the oldest are found in the deepest layers
• There are fossils of all life-forms to be found in rock layers
• All fossils were formed at the same time
• Fossils have been shown to provide a complete record of human evolution

Which group of organisms is believed to have been the earliest to evolve?

• land plants
• cyanobacteria
• aquatic dinosaurs
• mammals

A clear fish imprint in a rock indicates that the rock is probably ___.

• volcanic
• sedimentary
• metamorphic
• igneous

Structures that have a similar evolutionary origin and structure but are adapted for different purposes, such as a bat wing and human arm are called ____.

• embryological structures
• analogous structures
• homologous structures
• homozygous strucures

Natural selection can be best defined as the ___.

• survival of the biggest and strongest organisms in a population
• elimination of the smallest organisms by the biggest organisms
• survival and reproduction of the organisms that occupy the largest area
• survival and reproduction of the organisms that are genetically best adapted to the environment

Tags

NGSS.MS-LS4-4

Which answer BEST shows an animal's adaptation to the tropical rain forest?

• camouflage in a tree frog
• the long neck of a giraffe
• an elephant's long trunk
• migration of birds in winter

The founder of modern evolution theory is considered to be _____.

• Charles Darwin
• Alexander Oparin
• Stephen Jay Gould
• Lynn Margulis

Tags

NGSS.HS-LS4-4