CONCEPTS & INVESTIGATIONS CUSTOM

4th Edition

ISBN: 9781307085341

Author: Hoefnagels

Publisher: MCG/CREATE

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Concept explainers

Evolution

The history and science of origin and evolution comprise two events, the beginning of life and expansion of life. Our earth originated about 4.5 billion years ago. The term evolution is derived from two Latin words and means the act of unfolding or unrol…

Cladistics

Cladistics is a technique in the classification of organisms, where they are grouped into different clades. The proof for the relationships that are hypothesized is based on the shared derived characteristics known as synapomorphies. These characteristic…

Outgroups

Outgroups are significant in studying cladistics or phylogenetics (that describe the evolutionary relationship between different organisms). Further, it is also important to understand the differences and similarities between different organisms.

Taxonomy

It is the branch of biology that works with the identification of organisms at first, then naming, and classification of them into phenetic or phylogenetic groups (a classification system). In other words, it is the scientific study of biological diversi…

Phylogenetics

Phylogenetics is the scientific study of how various groups of organisms are related at the evolutionary level. It finds the relationship between various organisms based on their evolutionary similarities and differences. It is a part of the taxonomy. Al…

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Textbook Question

Chapter 21, Problem 3PIT

Chapter 21, Problem 3PIT, 3. Draw a concept map that summarizes the chordates, including both invertebrates and vertebrates.

3. Draw a concept map that summarizes the chordates, including both invertebrates and vertebrates.

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Chapter 21, Problem 2PIT

Chapter 22.1, Problem 1MC

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1. List three traits that evolved in invertebrate animals.

1. Differentiate the vertebrates by their features.

1. Describe evidence showing that echinoderms are more closely related to chordates than are other invertebrate phyla.

Chapter 21 Solutions

CONCEPTS & INVESTIGATIONS CUSTOM

Ch. 21.1 - Prob. 1MC Ch. 21.1 - Prob. 2MC Ch. 21.1 - Prob. 3MC Ch. 21.1 - Prob. 4MC Ch. 21.1 - Prob. 5MC Ch. 21.1 - What advantages does segmentation confer?Ch. 21.1 - Prob. 7MC Ch. 21.2 - Prob. 1MC Ch. 21.2 - Prob. 2MC Ch. 21.2 - Prob. 3MC

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