The agricultural value of research to understand the control of root hair development. Introduction: Roots and stems of plants are produced with secondary growth. Gymnosperms and woody eudicots have primary growth at apical meristem and at lateral meristem, the secondary growth occurs. The secondary tissue is produced as a result of the activity of two lateral meristems, namely the cork cambium and vascular cambium.

Question

You have returned to college to become a phylogeneticist. One of the first things you wish to do is determine how mammals, birds, and reptiles are related. Like any good scientist, you need to consider all available data objectively and without a preconceived “correct” answer. In pursuit of that, you should produce a phylogenetic tree based only on morphological features that show birds and mammals are more closely related. You will then produce a totally different tree, also using morphological features, that shows birds and reptiles are more closely related. Do not forget to include all three groups in both your trees. Based solely off the trees you produce, which relationship would you consider the more likely and why? Once you have answered that question, provide a brief summary of the “modern” understanding of the relationship between these three groups.

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Question

Chapter 36, Problem 16TYU

Summary Introduction

To explain: The agricultural value of research to understand the control of root hair development.

Introduction: Roots and stems of plants are produced with secondary growth. Gymnosperms and woody eudicots have primary growth at apical meristem and at lateral meristem, the secondary growth occurs. The secondary tissue is produced as a result of the activity of two lateral meristems, namely the cork cambium and vascular cambium.

Summary Introduction

To explain: The agricultural value of the interactions leading to the mycorrhizal association.

Introduction: Roots and stems of plants are produced with secondary growth. Gymnosperms and woody eudicots have primary growth at apical meristem and at lateral meristem, the secondary growth occurs. The secondary tissue is produced as a result of the activity of two lateral meristems, namely the cork cambium and vascular cambium.

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You have returned to college to become a phylogeneticist. One of the first things you wish to do is determine how mammals, birds, and reptiles are related. Like any good scientist, you need to consider all available data objectively and without a preconceived “correct” answer. In pursuit of that, you should produce a phylogenetic tree based only on morphological features that show birds and mammals are more closely related. You will then produce a totally different tree, also using morphological features, that shows birds and reptiles are more closely related. Do not forget to include all three groups in both your trees. Based solely off the trees you produce, which relationship would you consider the more likely and why? Once you have answered that question, provide a brief summary of the “modern” understanding of the relationship between these three groups.

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