Which type of plant hormone appears to play a major role in gravitropism in roots and shoots?

Name: Which type of plant hormone appears to play a major role in gravitropism in roots and shoots?
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Auxin is the plant hormone that appears to play a major role in gravitropism in both roots and shoots. Auxin is transported to the lower side of the plant part that is responding to gravity, causing differential growth and bending towards or away from gravity, respectively.

Which Type of Plant Hormone Appears to Play a Major