This image shows the development of a normal plant. It resembles the different growth processes for a leaf, a stem, etc. On top of the gradual growth of the plant, the image reveals the true meaning of phototropism and cell elongation, meaning the light energy from the sun is causing the growing plant to bend towards the light aka elongate.
<a href="//commons.wikimedia.org/w/index.php?title=User:Snailzzzz&amp;action=edit&amp;redlink=1" class="new" title="User:Snailzzzz (page does not exist)">Snailzzzz</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>