BiologyCode 5090
Coordination and response in plants
What this topic asks you to be able to do
- Describe gravitropism as a plant's growth response to gravity, with parts growing either towards it or away from it
- Describe phototropism as a plant's growth response to light, with parts growing either towards it or away from it
- Explain how auxin controls the growth of shoots, limited to: auxin is produced in the shoot tip; it spreads from the tip through the rest of the plant; light and gravity cause it to be distributed unequally; it stimulates cell elongation
- Investigate how shoots and roots show phototropism and gravitropism