A seedling shoot grows towards a window.
Which response does this show?
positive gravitropism
negative phototropism
positive phototropism
negative gravitropism
46 exam-style questions on Edexcel GCSE Biology 6.3 Plant hormones, covering 6.3.1 Plant hormones and tropisms and 6.3.2 Commercial uses of plant hormones. Each one has a worked solution and a mark scheme showing where the marks go.