Question

How does positive gravitropism occur in flowering plants?

Accepted Answer

- cells in root tip produce IAA- IAA transported to all parts of root- gravity causes movement of IAA from higher side to lower side- greater IAA concentration on the lower side- IAA inhibits elongation of root cells- slower elongation on the lower side- root grows towards gravity source

Front	How does positive gravitropism occur in flowering plants?
Back	- cells in root tip produce IAA - IAA transported to all parts of root - gravity causes movement of IAA from higher side to lower side - greater IAA concentration on the lower side - IAA inhibits elongation of root cells - slower elongation on the lower side - root grows towards gravity source

Iaa Root Side Lower Cells Gravity Elongation Positive