CAMPBELL BIOLOGY:CONCEPTS... >CUSTOM<
CAMPBELL BIOLOGY:CONCEPTS... >CUSTOM<
18th Edition
ISBN: 9781323753149
Author: SIMON
Publisher: PEARSON C
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Chapter 33, Problem 3TYK
Summary Introduction

Introduction:

The auxin is a plant hormone produced by the apical meristems of shoot and root. It functions to promote stem elongation and also enhances apical dominance.

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Root cells exhibit positive gravitropism with the help ofa. auxin in the root cells.b. amyloplasts in root cells.c. exposure to sunlight.d. a nearby substrate.
Which of the following may stimulate the growth of the roots in plant cuttings? Select one: a. The use of auxins. b. A decrease in soil minerals. c. A decrease in enzymes. d. The use of endocrine secretions.
Which combination of hormones is best for promotingthe formation of lateral roots from pericycle?a. A high auxin level and low cytokinin levelb. A low auxin level and high cytokinin levelc. A high level of auxin and cytokinin
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