Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 36, Problem 9TYK
Summary Introduction

Introduction:

A leaf is made up of many differentiated cells. The leaf originates from a region present right behind the apical meristem of the shoot. This region is leaf primordium. The development of leaf from leaf primordia initiates with signaling activities that are regulated by genes. These genes signal hormones that reach the target cell with the help of the vascular system of the stem.

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In vascular plants, one difference between root and shoot systems is that a. root systems cannot undergo secondary growth. b. root systems undergo secondary growth, but do not form bark. c. root systems contain pronounced zones of cell elongation, whereas shoot systems do not. d. root systems can store food reserves, whereas stem structures do not.
Which of the following is/are false regarding the phloem? A. It transports starch from the leaves to the stem. B. It transports sucrose from the leaves to the roots. C. It is located lateral to the xylem in tree stems. D. Unlike the xylem, majority of the cells are living. E. A and D F. B and C
New plant cells originate from thea. parenchyma.b. collenchyma.c. sclerenchyma.d. base of the shoot.e. apical meristem.
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