Biology (MindTap Course List)
Biology (MindTap Course List)
10th Edition
ISBN: 9781285423586
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 51.4, Problem 1C
Summary Introduction

To explain: The archenteron.

Introduction: The process of gastrulation leads to the development of a structure called archenteron. Various types of structures and germ layers are formed during the process of gastrulation, which results in important morphogenesis of organism at the embryonic stage of their development.

Summary Introduction

To determine: Whether archenteron is formed in sea stars.

Introduction: The process of gastrulation leads to the development of a structure called archenteron. Archenteron can be defined as a primary type of gut that is formed during the gastrulation process of development of zygote. It is also known as the digestive tube and develops inside the endoderm and mesoderm layers of an animal.

Summary Introduction

To determine: Whether archenteron is formed in amphibians.

Introduction: The process of gastrulation leads to the development of a structure called archenteron. Archenteron can be defined as a primary type of gut that is formed during the gastrulation process of development of zygote. It is also known as the digestive tube and develops inside the endoderm and mesoderm layers of an animal.

Summary Introduction

To determine: Whether archenteron is formed in birds.

Introduction: The process of gastrulation leads to the development of a structure called archenteron. Archenteron can be defined as a primary type of gut that is formed during the gastrulation process of development of zygote. It is also known as the digestive tube and develops inside the endoderm and mesoderm layers of an animal.

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1.) Community Diversity: The brown and orange line represent two different plant communities. a. Which color represents the community with a higher species richness? b. Which color represents the community with a higher species evenness? Relative abundance 0.1 0.04 0.001 2 4 6 8 10 12 14 16 18 20 22 24 Rank abundance c. What is the maximum value of the Simpson's diversity index (remember, Simpson's index is D = p², Simpson's diversity index is 1-D)? d. If the Simpson's diversity index equals 1, what does that mean about the number of species and their relative abundance within community being assessed?
1.) Community Diversity: The brown and orange line represent two different plant communities. a. Which color represents the community with a higher species richness? b. Which color represents the community with a higher species evenness? Relative abundance 0.1 0.04 0.001 2 4 6 8 10 12 14 16 18 20 22 24 Rank abundance c. What is the maximum value of the Simpson's diversity index (remember, Simpson's index is D = p², Simpson's diversity index is 1-D)? d. If the Simpson's diversity index equals 1, what does that mean about the number of species and their relative abundance within community being assessed?

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Biology (MindTap Course List)

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From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license