Do plant stems still grow upwards when you suspend the plant upside down?

Question: Do plant stems still grow upwards when you suspend the plant upside down?
- Keywords:
  plant,
  stems,
  suspend,
  upside
Asked by kapayaewh to David, Helen, Ian, rhysphillips, Sarah on 15 Jun 2011.
- Rhys Phillips answered on 14 Jun 2011:
  
  I think it depends on the plant – most plants grow towards the sun so it doesn’t matter which way up you hold them. Some just grow to wherever there is space.
- Ian van der Linde answered on 15 Jun 2011:
  
  That sounds like an ideal experiment to try out at home! Plants change direction all the time to follow the sunlight, so it is likely that if the plant is still young and flexible that it will try to rearrange itself as much as it can to get to the sunlight above it.
- David Corne answered on 15 Jun 2011:
  
  Plants seem to do whatever makes it easier for them to get light and nutrients – so, the stem grows upwards, which enables the leaves to grow in a pattern that catches more light, and the roots grow downward, because the deeper they go the more nutrient-rich water they can suck up. If the soil was somehow bathed in light, the stem would probably grow downward. If you suspended a plant upside down, the soil would probably fall out of its pot onto your shoes, and you’d get a telling off.

Question: Do plant stems still grow upwards when you suspend the plant upside down?