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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Was the section in the micrograph shown at right taken from a stem or a root? Monocot or eudicot? How can you tell?

Chapter 27, Problem 5CT, Was the section in the micrograph shown at right taken from a stem or a root? Monocot or eudicot?

Summary Introduction

To determine: Whether the micrograph shown in the question is a stem or a root that belongs to eudicot or monocot.

Concept introduction: The plants whose seeds contain two cotyledons or embryonic leaves are known as dicotyledons or simply dicot. Well-defined epidermis with cuticle and multicellular stem hairs is a characteristic of the eudicot stem. In the eudicot stem, the endodermis is distinct as the innermost layer of the cortex.

Explanation

The micrograph shown in the question is a eudicot stem. The vascular bundles seen in the picture are set in a characteristic ring. If it was a monocot stem, the vascular bundles will be scattered all over the stem. The micrograph is not taken from the dicot root...

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