Question 1

Radiometric dating works best with ____. ​

Accepted Answer

A) sedimentary rocks 
B) limestone 
C) metamorphic rock 
D) volcanic rocks 
E) meteorites 
A) sedimentary rocks 
B) limestone 
C) metamorphic rock 
D) volcanic rocks 
E) meteorites

Question 2

What is the general trend in diversity in vascular plants for the past 145 million years? ​

Accepted Answer

The approximate number of species has in

Question 3

The potential seventh mass extinction refers to ____.  ​

Accepted Answer

A) the loss of 50% of species on Earth, including dinosaurs, at the end of the Cretaceous 
B) the most extensive loss of species that occurred during the Permian ​ 
C) what will happen to the human species if a nuclear war occurs 
D) the rapid loss of biodiversity due to human degradation of the environment 
E) events that occurred just before insects diversified on land 
A) the loss of 50% of species on Earth, including dinosaurs, at the end of the Cretaceous 
B) the most extensive loss of species that occurred during the Permian ​ 
C) what will happen to the human species if a nuclear war occurs 
D) the rapid loss of biodiversity due to human degradation of the environment 
E) events that occurred just before insects diversified on land

Question 4

Match between columns
                        Premises: origin of life; evolution of prokaryotes

Accepted Answer

The Answer of Devonian and Cenozoic - Tertiary and Cambrian is...

Question 5

Match between columns
                        Premises: conifers

Accepted Answer

The Answer of  D and  E and  is...

Question 6

The narrower and more tubular shape of Delphinium nudicaule flowers, which mature at an earlier stage of development than Delphinium decorum flowers, is the product of ____. ​

Accepted Answer

A) allometric growth 
B) exaptation 
C) paedomorphosis 
D) disjunct vicariance 
E) continuous vicariance 
A) allometric growth 
B) exaptation 
C) paedomorphosis 
D) disjunct vicariance 
E) continuous vicariance

Question 7

Why is it difficult to find intermediate fossils for organisms that have evolved under the punctuated equilibrium model?

Accepted Answer

Evolutionary change in these o

Question 8

Why would migration to an island by a single pair of birds be likely to lead to adaptive radiation in their descendants?

Accepted Answer

Islands are often poor in spec

Question 9

The punctuated equilibrium hypothesis suggests that speciation usually occurs in isolated populations at the edge of a species' geographical distribution.

Accepted Answer

A) True 
 B)False

Question 10

The fossil record indicates that the immediate ancestors of modern marine animals diversified in the ____ period, right after the ____ extinction. ​

Accepted Answer

A) Ordovician; Cambrian 
B) Jurassic; Triassic 
C) Carboniferous; Devonian 
D) Paleogene; Cretaceous 
E) Triassic; Permian 
A) Ordovician; Cambrian 
B) Jurassic; Triassic 
C) Carboniferous; Devonian 
D) Paleogene; Cretaceous 
E) Triassic; Permian

Question 11

Match between columns
                        Premises: diversification of terrestrial vascular plants; first amphibians and insects

Accepted Answer

The Answer of Archaean and Permian and Devonian and Cenozoic is...

Question 12

Match between columns
                        Premises: modern birds and mammals diversify

Accepted Answer

The Answer of Cambrian and Cenozoic - Tertiary and Silurian is...

Question 13

A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40, which has a half-life of 1.25 billion years. The rock now contains 3 mg of the isotope. About how old is the rock? ​

Accepted Answer

A) 2.5 billion years 
B) 5.0 billion years 
C) 1.25 billion years 
D) 0.3 billion years 
E) 0.4 billion years 
A) 2.5 billion years 
B) 5.0 billion years 
C) 1.25 billion years 
D) 0.3 billion years 
E) 0.4 billion years

Question 14

How does today's climate compare to most of the Earth's history? What does this indicate about how human activities can affect climate?

Accepted Answer

The Earth is currently in a relatively c

Question 15

Peter Sheldon found that the number of tail "ribs" in ____ changed over a 3 million year period with no evidence of speciation. ​

Accepted Answer

A) horses 
B) trilobites 
C) insects 
D) humans 
E) ectoprocts 
A) horses 
B) trilobites 
C) insects 
D) humans 
E) ectoprocts

Question 16

Using the geological time scale, scientists can determine the absolute age of rocks and fossils.

Accepted Answer

A) True 
 B)False

Question 17

Angiosperms first appeared during the ____ period. ​

Accepted Answer

A) Cambrian 
B) Jurassic 
C) Cretaceous 
D) Neogene 
E) Devonian 
A) Cambrian 
B) Jurassic 
C) Cretaceous 
D) Neogene 
E) Devonian

Question 18

During the Cretaceous period, ____.

Accepted Answer

A) mammals diversified and flourished 
B) life appeared on this planet 
C) the first animals with shells and skeletons appeared 
D) the dinosaurs reached their peak and then became extinct 
E) the first human-like apes appeared 
A) mammals diversified and flourished 
B) life appeared on this planet 
C) the first animals with shells and skeletons appeared 
D) the dinosaurs reached their peak and then became extinct 
E) the first human-like apes appeared

Question 19

Most dinosaurs died out by the end of the ____ period. ​

Accepted Answer

A) Triassic 
B) Jurassic 
C) Cretaceous 
D) Quaternary 
E) Permian 
A) Triassic 
B) Jurassic 
C) Cretaceous 
D) Quaternary 
E) Permian

Question 20

The diversity of terrestrial vascular plants has increased almost continuously since the ____ period.

Accepted Answer

A) Devonian 
B) Ordovician 
C) Cambrian 
D) Silurian 
E) Proterozoic 
A) Devonian 
B) Ordovician 
C) Cambrian 
D) Silurian 
E) Proterozoic

Exam 23: Paleobiology and Macroevolution

Radiometric dating works best with ____. ​

What is the general trend in diversity in vascular plants for the past 145 million years? ​

The potential seventh mass extinction refers to ____. ​

The narrower and more tubular shape of Delphinium nudicaule flowers, which mature at an earlier stage of development than Delphinium decorum flowers, is the product of ____. ​

Why is it difficult to find intermediate fossils for organisms that have evolved under the punctuated equilibrium model?

Why would migration to an island by a single pair of birds be likely to lead to adaptive radiation in their descendants?

The punctuated equilibrium hypothesis suggests that speciation usually occurs in isolated populations at the edge of a species' geographical distribution.

The fossil record indicates that the immediate ancestors of modern marine animals diversified in the ____ period, right after the ____ extinction. ​

A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40, which has a half-life of 1.25 billion years. The rock now contains 3 mg of the isotope. About how old is the rock? ​

How does today's climate compare to most of the Earth's history? What does this indicate about how human activities can affect climate?

Peter Sheldon found that the number of tail "ribs" in ____ changed over a 3 million year period with no evidence of speciation. ​

Using the geological time scale, scientists can determine the absolute age of rocks and fossils.

Angiosperms first appeared during the ____ period. ​

During the Cretaceous period, ____.

Most dinosaurs died out by the end of the ____ period. ​

The diversity of terrestrial vascular plants has increased almost continuously since the ____ period.

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

DNA Structure, Replication, and Organization

From DNA to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technologies: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Animal Nutrition

Regulating the Internal Environment

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

Radiometric dating works best with ____.

What is the general trend in diversity in vascular plants for the past 145 million years?

The potential seventh mass extinction refers to ____.

The narrower and more tubular shape of Delphinium nudicaule flowers, which mature at an earlier stage of development than Delphinium decorum flowers, is the product of ____.

The fossil record indicates that the immediate ancestors of modern marine animals diversified in the period, right after the extinction.

A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40, which has a half-life of 1.25 billion years. The rock now contains 3 mg of the isotope. About how old is the rock?

Peter Sheldon found that the number of tail "ribs" in ____ changed over a 3 million year period with no evidence of speciation.

Angiosperms first appeared during the ____ period.

Most dinosaurs died out by the end of the ____ period.