Define the term: Circummutation.

(N/A) Circummutation is the spontaneous,rhythmic,and circular or elliptical growth movement of the tip of a growing plant organ,such as a stem,tendril,or coleoptile.
This movement occurs because the cells on different sides of the organ grow at different rates in a sequential manner.
As a result,the tip of the growing stem traces a helical or spiral curve in space as it elongates.