Answer
a
Work Step by Step
Phototropism and heliotropism are related because they both involve the elongation of certain stem cells in response to light. Additionally, both types of plant movements respond to blue light.
Biology: The Unity and Diversity of Life (14th Edition)
by Starr, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Published by
Brooks/Cole Publishing Co.
ISBN 10:
1305073959
ISBN 13:
978-1-30507-395-1
Chapter 30 - Self-Quiz - Page 516: 6
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