Click the Messages tab in My eBay. Select Change settings. In the Store holiday settings section, select Turn ON. If you'd like to hide your fixed price listings from eBay search results and Store pages and block buyers from buying the items in these listings while you're away, select Hide and block purchases from my fixed price listings.
And the mechanism that's thought to be behind it is brilliantly simple. Cells in the root and shoot tips contain little packets of starch, called statoliths. The starch is dense so the statoliths always settle at the bottom of the cell. The position of the statoliths determines which direction auxin is released in. Tilting the plant on its side makes the statoliths roll and settle on the side of the cells, causing auxin to be released in that direction, and the cells there to elongate.
Slide 2: Nature of Auxins The term auxin is derived from the Greek word auxein which means to grow. Compounds are generally considered auxins if they can be characterized by their ability to induce cell elongation in stems and otherwise resemble indoleacetic acid (the first auxin isolated) in physiological activity.ranslocation of Auxin Auxin travels from cell to cell being taken up on one side of the cell by influx transporters in the plasma membrane and moved out on the other side by efflux transporters-called PIN proteins-where it can then be taken up by the adjacent cell.