Biological Science (6th Edition)
Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 24, Problem 1TYK

What distinguishes a morphospecies?

a. It has distinctive characteristics, such as size, shape, or coloration.

b. It represents a distinct branch in a phylogeny of populations.

c. It is reproductively isolated from other species.

d. It is a fossil from a distinct time in Earth history.

Expert Solution & Answer
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Summary Introduction

Introduction:

Morphology confers to the study of the structures of the organisms, involving its function, in order to classify organisms. Furthermore, morphology can be classified as functional morphology, molecular morphology, anatomy morphology, comparative morphology, and several other branches of morphology.

Answer to Problem 1TYK

Correct answer:

A morphospecies has distinct characteristics including color, shape, and size. The concept of the morphospecies is helpful in the identification of the morphologic features of the organisms.

Explanation of Solution

Explanation/justification for the correct answer:

Option (a) is given as distinction in the size, shape, and coloration. The term “morphospecies” have originated from morphology, which is used to indicate the difference in the body structure of the organisms; it could be color, size, or shape. It is based on the concept that isolated, independent gene flow results in the development of distinguished phenotypic features. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as the representation of the population phylogeny. However, morphospecies is a term used to describe different species rather than a defining a branch in phylogenetic population (relation to the ancestors). So, it is a wrong answer.

Option (c) is given as reproductive isolation from another species. A morphospecies cannot be distinguished based on the reproductive isolation as none of the two different species can reproduce together. So, it is a wrong answer.

Option (d) is given as the presence of the fossil from some distinct time in the history of earth. A fossil is a preserved form of any individual, which is formed over a long period of time. So, it is a wrong answer.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

Thus, the morphospecies can be distinguished based on its size, shape, and color.

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