Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 28, Animal Systems II - Assessment - 28.1 Response - Understand Key Concepts/Think Critically - Page 834: 1



Work Step by Step

Stimuli trigger reactions in organisms. Examples of stimuli are chemicals, light, and sounds. Organisms have sensory organs that pick up these stimuli to be processed by the nervous system.
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