"Sunflowers got their name not only because their blossoms are round and yellow but also because the plants are heliotropic."
What does the word "heliotropic" mean in this context? Use these dictionary entries to answer the question:
helio- (prefix) related to the sun or sunlight
-tropos (suffix) turning
plants that thrive in full sun
plants that are warm to the touch
plants that swivel to face the sun
plants that give off light
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In this context, the word "heliotropic" means "plants that swivel to face the sun."
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