Question 1

To assign absolute dates to fossils in this sediment core, it would be most helpful if ________.

Accepted Answer

A)  we knew the order in which the fossils occurred 
B)  the sediments had not been affected by underwater currents during their deposition 
C)  volcanic ash layers were regularly interspersed between the sedimentary strata 
D)  fossils throughout the column were equally spaced apart 
A)  we knew the order in which the fossils occurred 
B)  the sediments had not been affected by underwater currents during their deposition 
C)  volcanic ash layers were regularly interspersed between the sedimentary strata 
D)  fossils throughout the column were equally spaced apart

Question 2

Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.

Accepted Answer

A)  vacant ecological niches 
B)  genetic drift 
C)  colonization of an isolated region that contains suitable habitat and few competitor species 
D)  evolutionary innovation 
E)  an adaptive radiation in a group of organisms (such as plants) that another group uses as food 
A)  vacant ecological niches 
B)  genetic drift 
C)  colonization of an isolated region that contains suitable habitat and few competitor species 
D)  evolutionary innovation 
E)  an adaptive radiation in a group of organisms (such as plants) that another group uses as food

Question 3

The approach to estimating phylogenetic trees is most like the approach of which species concept?

Accepted Answer

A)  morphological species concept 
B)  biological species concept 
C)  phylogenetic species concept 
D)  subspecies concept 
A)  morphological species concept 
B)  biological species concept 
C)  phylogenetic species concept 
D)  subspecies concept

Exam 25: Phylogenies and the History of Life

To assign absolute dates to fossils in this sediment core, it would be most helpful if ________.

Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.

The approach to estimating phylogenetic trees is most like the approach of which species concept?

Biology and the Tree of Life

Water and Carbon: the Chemical Basis of Life

Protein Structure and Function

Nucleic Acids and the Rna World

An Introduction to Carbohydrates

Ecosystems and Global Ecology

Lipids, Membranes, and the First Cells

Inside the Cell

Energy and Enzymes: an Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cellcell Interactions

The Cell Cycle

Meiosis

Mendel and the Gene

Dna and the Gene: Synthesis and Repair

How Genes Work

Transcription, Rna Processing, and Translation

Control of Gene Expression in Bacteria

Control of Gene Expression in Eukaryotes

The Molecular Revolution: Biotechnology and Beyond

Genes, Development, and Evolution

Evolution by Natural Selection

Evolutionary Processes

Speciation

Bacteria and Archaea

Protists

Green Algae and Land Plants

Fungi

An Introduction to Animals

Protostome Animals

Deuterostome Animals

Viruses

Plant Form and Function

Water and Sugar Transport in Plants

Plant Nutrition

Plant Sensory Systems, Signals, and Responses

Plant Reproduction and Development

Animal Form and Function

Water and Electrolyte Balance in Animals

Animal Nutrition

Gas Exchange and Circulation

Animal Nervous Systems

Animal Sensory Systems

Animal Movement

Chemical Signals in Animals

Animal Reproduction and Development

The Immune System in Animals

An Introduction to Ecology

Behavioral Ecology

Population Ecology

Community Ecology

Biodiversity and Conservation Biology

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