Is there a single topic more likely to strike fear into the heart of a GCSE Biology student?  Everyone hates plant tropisms – students because it seems dull, and teachers because it seems like 19th century science and none of us can see for one second why it should appear in 21st century specifications…..  I will write a post about auxins, phototropism and geotropism for your all but it will take me a day or two to build up to it…..  As I said, everyone hates tropisms.