Ch.26 - History of Life on EarthWorksheetSee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology
Sections
History of Life on Earth
LearnAdditional Practice

Concept #1: Plate Tectonics and Continental Drift

Concept #2: Biogeography, Fossil Record, and Radiocarbon Dating

Concept #3: Mass Extinctions and Adaptive Radiation

Concept #4: Timeline of Life on Earth

Additional Problems
The study of the movement of the earth's crust is called _____. a. paleontology b. meteorology c. plate tectonics d. driftology
The oldest fossils of eukaryotes have been estimated to bea. 6000 years oldb. 8 billion years oldc. 4.5 billion years oldd. 1.5 billion years olde. 1995 years old
The primitive atmosphere had little if any _____.a. waterb. free oxygenc. carbon dioxided. nitrogen 
The time period during which life arose and the first cells came into existence is the _____.a. Jurassicb. Carboniferousc. Precambriand. Paleocene
When two continents collide a(n) _____ often forms.a. chain of volcanic islandsb. ocean trenchc. mountain ranged. ocean ridge
Approximately how long ago did LIFE first evolve on eartha. 4.5 billion yearsb. 3.5 billion yearsc. 1 billion yearsd. 600 million yearse. 100,000 years
According to geochemists which of the following would have been the most unlikely condition on the primitive Earth?a. atmospheric coolingb. crust formationc. gas cloud encircling the Earthd. high levels of oxygene. water, carbon dioxide, and nitrogen among the early gases
The first forms of life on eart were thought to be _____.A. single-celled plantsB. prokaryotesC. insectsD. large animals such as dinosaurs
Which of the following is NOT a reason why fossils are especially significant in understanding the evolutionary history of insects?A. They provide the only direct information on the ages of the lineages?B. They reveal the pattern and timing of extinctions and radiationsC. They are quite common for insects relative to other groups.D. They can assist in reconstructing the phylogeny of groupsE. They provide the only direct evidence of extinct lineages.